1990900800

素因数分解:

$2^6\times 3^2\times 5^2\times 7^1\times {\mathrm{19751}}^1$

素因数の和:19786

約数の個数: 252

約数和(自身を含む): 8087416896

約数和(自身を除く): 6096516096

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 25, 28, 30, 32, 35, 36, 40, 42, 45, 48, 50, 56, 60, 63, 64, 70, 72, 75, 80, 84, 90, 96, 100, 105, 112, 120, 126, 140, 144, 150, 160, 168, 175, 180, 192, 200, 210, 224, 225, 240, 252, 280, 288, 300, 315, 320, 336, 350, 360, 400, 420, 448, 450, 480, 504, 525, 560, 576, 600, 630, 672, 700, 720, 800, 840, 900, 960, 1008, 1050, 1120, 1200, 1260, 1344, 1400, 1440, 1575, 1600, 1680, 1800, 2016, 2100, 2240, 2400, 2520, 2800, 2880, 3150, 3360, 3600, 4032, 4200, 4800, 5040, 5600, 6300, 6720, 7200, 8400, 10080, 11200, 12600, 14400, 16800, 19751, 20160, 25200, 33600, 39502, 50400, 59253, 79004, 98755, 100800, 118506, 138257, 158008, 177759, 197510, 237012, 276514, 296265, 316016, 355518, 395020, 414771, 474024, 493775, 553028, 592530, 632032, 691285, 711036, 790040, 829542, 888795, 948048, 987550, 1106056, 1185060, 1244313, 1264064, 1382570, 1422072, 1481325, 1580080, 1659084, 1777590, 1896096, 1975100, 2073855, 2212112, 2370120, 2488626, 2765140, 2844144, 2962650, 3160160, 3318168, 3456425, 3555180, 3792192, 3950200, 4147710, 4424224, 4443975, 4740240, 4977252, 5530280, 5688288, 5925300, 6221565, 6320320, 6636336, 6912850, 7110360, 7900400, 8295420, 8848448, 8887950, 9480480, 9954504, 10369275, 11060560, 11376576, 11850600, 12443130, 13272672, 13825700, 14220720, 15800800, 16590840, 17775900, 18960960, 19909008, 20738550, 22121120, 23701200, 24886260, 26545344, 27651400, 28441440, 31107825, 31601600, 33181680, 35551800, 39818016, 41477100, 44242240, 47402400, 49772520, 55302800, 56882880, 62215650, 66363360, 71103600, 79636032, 82954200, 94804800, 99545040, 110605600, 124431300, 132726720, 142207200, 165908400, 199090080, 221211200, 248862600, 284414400, 331816800, 398180160, 497725200, 663633600, 995450400, 1990900800]

約数ペア:

[(1, 1990900800), (2, 995450400), (3, 663633600), (4, 497725200), (5, 398180160), (6, 331816800), (7, 284414400), (8, 248862600), (9, 221211200), (10, 199090080), (12, 165908400), (14, 142207200), (15, 132726720), (16, 124431300), (18, 110605600), (20, 99545040), (21, 94804800), (24, 82954200), (25, 79636032), (28, 71103600), (30, 66363360), (32, 62215650), (35, 56882880), (36, 55302800), (40, 49772520), (42, 47402400), (45, 44242240), (48, 41477100), (50, 39818016), (56, 35551800), (60, 33181680), (63, 31601600), (64, 31107825), (70, 28441440), (72, 27651400), (75, 26545344), (80, 24886260), (84, 23701200), (90, 22121120), (96, 20738550), (100, 19909008), (105, 18960960), (112, 17775900), (120, 16590840), (126, 15800800), (140, 14220720), (144, 13825700), (150, 13272672), (160, 12443130), (168, 11850600), (175, 11376576), (180, 11060560), (192, 10369275), (200, 9954504), (210, 9480480), (224, 8887950), (225, 8848448), (240, 8295420), (252, 7900400), (280, 7110360), (288, 6912850), (300, 6636336), (315, 6320320), (320, 6221565), (336, 5925300), (350, 5688288), (360, 5530280), (400, 4977252), (420, 4740240), (448, 4443975), (450, 4424224), (480, 4147710), (504, 3950200), (525, 3792192), (560, 3555180), (576, 3456425), (600, 3318168), (630, 3160160), (672, 2962650), (700, 2844144), (720, 2765140), (800, 2488626), (840, 2370120), (900, 2212112), (960, 2073855), (1008, 1975100), (1050, 1896096), (1120, 1777590), (1200, 1659084), (1260, 1580080), (1344, 1481325), (1400, 1422072), (1440, 1382570), (1575, 1264064), (1600, 1244313), (1680, 1185060), (1800, 1106056), (2016, 987550), (2100, 948048), (2240, 888795), (2400, 829542), (2520, 790040), (2800, 711036), (2880, 691285), (3150, 632032), (3360, 592530), (3600, 553028), (4032, 493775), (4200, 474024), (4800, 414771), (5040, 395020), (5600, 355518), (6300, 316016), (6720, 296265), (7200, 276514), (8400, 237012), (10080, 197510), (11200, 177759), (12600, 158008), (14400, 138257), (16800, 118506), (19751, 100800), (20160, 98755), (25200, 79004), (33600, 59253), (39502, 50400)]