20491800

素因数分解:

$2^3\times 3^1\times 5^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1$

素因数の和:91

約数の個数: 288

約数和(自身を含む): 80151120

約数和(自身を除く): 59659320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 17, 20, 21, 24, 25, 28, 30, 34, 35, 40, 41, 42, 49, 50, 51, 56, 60, 68, 70, 75, 82, 84, 85, 98, 100, 102, 105, 119, 120, 123, 136, 140, 147, 150, 164, 168, 170, 175, 196, 200, 204, 205, 210, 238, 245, 246, 255, 280, 287, 294, 300, 328, 340, 350, 357, 392, 408, 410, 420, 425, 476, 490, 492, 510, 525, 574, 588, 595, 600, 615, 680, 697, 700, 714, 735, 820, 833, 840, 850, 861, 952, 980, 984, 1020, 1025, 1050, 1148, 1176, 1190, 1225, 1230, 1275, 1394, 1400, 1428, 1435, 1470, 1640, 1666, 1700, 1722, 1785, 1960, 2009, 2040, 2050, 2091, 2100, 2296, 2380, 2450, 2460, 2499, 2550, 2788, 2856, 2870, 2940, 2975, 3075, 3332, 3400, 3444, 3485, 3570, 3675, 4018, 4100, 4165, 4182, 4200, 4305, 4760, 4879, 4900, 4920, 4998, 5100, 5576, 5740, 5880, 5950, 6027, 6150, 6664, 6888, 6970, 7140, 7175, 7350, 8036, 8200, 8330, 8364, 8610, 8925, 9758, 9800, 9996, 10045, 10200, 10455, 11480, 11900, 12054, 12300, 12495, 13940, 14280, 14350, 14637, 14700, 16072, 16660, 16728, 17220, 17425, 17850, 19516, 19992, 20090, 20825, 20910, 21525, 23800, 24108, 24395, 24600, 24990, 27880, 28700, 29274, 29400, 30135, 33320, 34153, 34440, 34850, 35700, 39032, 40180, 41650, 41820, 43050, 48216, 48790, 49980, 50225, 52275, 57400, 58548, 60270, 62475, 68306, 69700, 71400, 73185, 80360, 83300, 83640, 86100, 97580, 99960, 100450, 102459, 104550, 117096, 120540, 121975, 124950, 136612, 139400, 146370, 150675, 166600, 170765, 172200, 195160, 200900, 204918, 209100, 241080, 243950, 249900, 273224, 292740, 301350, 341530, 365925, 401800, 409836, 418200, 487900, 499800, 512295, 585480, 602700, 683060, 731850, 819672, 853825, 975800, 1024590, 1205400, 1366120, 1463700, 1707650, 2049180, 2561475, 2927400, 3415300, 4098360, 5122950, 6830600, 10245900, 20491800]

約数ペア:

[(1, 20491800), (2, 10245900), (3, 6830600), (4, 5122950), (5, 4098360), (6, 3415300), (7, 2927400), (8, 2561475), (10, 2049180), (12, 1707650), (14, 1463700), (15, 1366120), (17, 1205400), (20, 1024590), (21, 975800), (24, 853825), (25, 819672), (28, 731850), (30, 683060), (34, 602700), (35, 585480), (40, 512295), (41, 499800), (42, 487900), (49, 418200), (50, 409836), (51, 401800), (56, 365925), (60, 341530), (68, 301350), (70, 292740), (75, 273224), (82, 249900), (84, 243950), (85, 241080), (98, 209100), (100, 204918), (102, 200900), (105, 195160), (119, 172200), (120, 170765), (123, 166600), (136, 150675), (140, 146370), (147, 139400), (150, 136612), (164, 124950), (168, 121975), (170, 120540), (175, 117096), (196, 104550), (200, 102459), (204, 100450), (205, 99960), (210, 97580), (238, 86100), (245, 83640), (246, 83300), (255, 80360), (280, 73185), (287, 71400), (294, 69700), (300, 68306), (328, 62475), (340, 60270), (350, 58548), (357, 57400), (392, 52275), (408, 50225), (410, 49980), (420, 48790), (425, 48216), (476, 43050), (490, 41820), (492, 41650), (510, 40180), (525, 39032), (574, 35700), (588, 34850), (595, 34440), (600, 34153), (615, 33320), (680, 30135), (697, 29400), (700, 29274), (714, 28700), (735, 27880), (820, 24990), (833, 24600), (840, 24395), (850, 24108), (861, 23800), (952, 21525), (980, 20910), (984, 20825), (1020, 20090), (1025, 19992), (1050, 19516), (1148, 17850), (1176, 17425), (1190, 17220), (1225, 16728), (1230, 16660), (1275, 16072), (1394, 14700), (1400, 14637), (1428, 14350), (1435, 14280), (1470, 13940), (1640, 12495), (1666, 12300), (1700, 12054), (1722, 11900), (1785, 11480), (1960, 10455), (2009, 10200), (2040, 10045), (2050, 9996), (2091, 9800), (2100, 9758), (2296, 8925), (2380, 8610), (2450, 8364), (2460, 8330), (2499, 8200), (2550, 8036), (2788, 7350), (2856, 7175), (2870, 7140), (2940, 6970), (2975, 6888), (3075, 6664), (3332, 6150), (3400, 6027), (3444, 5950), (3485, 5880), (3570, 5740), (3675, 5576), (4018, 5100), (4100, 4998), (4165, 4920), (4182, 4900), (4200, 4879), (4305, 4760)]