20571600

素因数分解:

$2^4\times 3^1\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:138

約数の個数: 240

約数和(自身を含む): 78725120

約数和(自身を除く): 58153520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 25, 28, 30, 31, 35, 40, 42, 48, 50, 56, 60, 62, 70, 75, 79, 80, 84, 93, 100, 105, 112, 120, 124, 140, 150, 155, 158, 168, 175, 186, 200, 210, 217, 237, 240, 248, 280, 300, 310, 316, 336, 350, 372, 395, 400, 420, 434, 465, 474, 496, 525, 553, 560, 600, 620, 632, 651, 700, 744, 775, 790, 840, 868, 930, 948, 1050, 1085, 1106, 1185, 1200, 1240, 1264, 1302, 1400, 1488, 1550, 1580, 1659, 1680, 1736, 1860, 1896, 1975, 2100, 2170, 2212, 2325, 2370, 2449, 2480, 2604, 2765, 2800, 3100, 3160, 3255, 3318, 3472, 3720, 3792, 3950, 4200, 4340, 4424, 4650, 4740, 4898, 5208, 5425, 5530, 5925, 6200, 6320, 6510, 6636, 7347, 7440, 7900, 8295, 8400, 8680, 8848, 9300, 9480, 9796, 10416, 10850, 11060, 11850, 12245, 12400, 13020, 13272, 13825, 14694, 15800, 16275, 16590, 17143, 17360, 18600, 18960, 19592, 21700, 22120, 23700, 24490, 26040, 26544, 27650, 29388, 31600, 32550, 33180, 34286, 36735, 37200, 39184, 41475, 43400, 44240, 47400, 48980, 51429, 52080, 55300, 58776, 61225, 65100, 66360, 68572, 73470, 82950, 85715, 86800, 94800, 97960, 102858, 110600, 117552, 122450, 130200, 132720, 137144, 146940, 165900, 171430, 183675, 195920, 205716, 221200, 244900, 257145, 260400, 274288, 293880, 331800, 342860, 367350, 411432, 428575, 489800, 514290, 587760, 663600, 685720, 734700, 822864, 857150, 979600, 1028580, 1285725, 1371440, 1469400, 1714300, 2057160, 2571450, 2938800, 3428600, 4114320, 5142900, 6857200, 10285800, 20571600]

約数ペア:

[(1, 20571600), (2, 10285800), (3, 6857200), (4, 5142900), (5, 4114320), (6, 3428600), (7, 2938800), (8, 2571450), (10, 2057160), (12, 1714300), (14, 1469400), (15, 1371440), (16, 1285725), (20, 1028580), (21, 979600), (24, 857150), (25, 822864), (28, 734700), (30, 685720), (31, 663600), (35, 587760), (40, 514290), (42, 489800), (48, 428575), (50, 411432), (56, 367350), (60, 342860), (62, 331800), (70, 293880), (75, 274288), (79, 260400), (80, 257145), (84, 244900), (93, 221200), (100, 205716), (105, 195920), (112, 183675), (120, 171430), (124, 165900), (140, 146940), (150, 137144), (155, 132720), (158, 130200), (168, 122450), (175, 117552), (186, 110600), (200, 102858), (210, 97960), (217, 94800), (237, 86800), (240, 85715), (248, 82950), (280, 73470), (300, 68572), (310, 66360), (316, 65100), (336, 61225), (350, 58776), (372, 55300), (395, 52080), (400, 51429), (420, 48980), (434, 47400), (465, 44240), (474, 43400), (496, 41475), (525, 39184), (553, 37200), (560, 36735), (600, 34286), (620, 33180), (632, 32550), (651, 31600), (700, 29388), (744, 27650), (775, 26544), (790, 26040), (840, 24490), (868, 23700), (930, 22120), (948, 21700), (1050, 19592), (1085, 18960), (1106, 18600), (1185, 17360), (1200, 17143), (1240, 16590), (1264, 16275), (1302, 15800), (1400, 14694), (1488, 13825), (1550, 13272), (1580, 13020), (1659, 12400), (1680, 12245), (1736, 11850), (1860, 11060), (1896, 10850), (1975, 10416), (2100, 9796), (2170, 9480), (2212, 9300), (2325, 8848), (2370, 8680), (2449, 8400), (2480, 8295), (2604, 7900), (2765, 7440), (2800, 7347), (3100, 6636), (3160, 6510), (3255, 6320), (3318, 6200), (3472, 5925), (3720, 5530), (3792, 5425), (3950, 5208), (4200, 4898), (4340, 4740), (4424, 4650)]