21135660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{79}}^1$

素因数の和:125

約数の個数: 192

約数和(自身を含む): 75264000

約数和(自身を除く): 54128340

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 49, 52, 60, 65, 70, 78, 79, 84, 91, 98, 105, 130, 140, 147, 156, 158, 182, 195, 196, 210, 237, 245, 260, 273, 294, 316, 343, 364, 390, 395, 420, 455, 474, 490, 546, 553, 588, 637, 686, 735, 780, 790, 910, 948, 980, 1027, 1029, 1092, 1106, 1185, 1274, 1365, 1372, 1470, 1580, 1659, 1715, 1820, 1911, 2054, 2058, 2212, 2370, 2548, 2730, 2765, 2940, 3081, 3185, 3318, 3430, 3822, 3871, 4108, 4116, 4459, 4740, 5135, 5145, 5460, 5530, 6162, 6370, 6636, 6860, 7189, 7644, 7742, 8295, 8918, 9555, 10270, 10290, 11060, 11613, 12324, 12740, 13377, 14378, 15405, 15484, 16590, 17836, 19110, 19355, 20540, 20580, 21567, 22295, 23226, 26754, 27097, 28756, 30810, 33180, 35945, 38220, 38710, 43134, 44590, 46452, 50323, 53508, 54194, 58065, 61620, 66885, 71890, 77420, 81291, 86268, 89180, 100646, 107835, 108388, 116130, 133770, 135485, 143780, 150969, 162582, 201292, 215670, 232260, 251615, 267540, 270970, 301938, 325164, 352261, 406455, 431340, 503230, 541940, 603876, 704522, 754845, 812910, 1006460, 1056783, 1409044, 1509690, 1625820, 1761305, 2113566, 3019380, 3522610, 4227132, 5283915, 7045220, 10567830, 21135660]

約数ペア:

[(1, 21135660), (2, 10567830), (3, 7045220), (4, 5283915), (5, 4227132), (6, 3522610), (7, 3019380), (10, 2113566), (12, 1761305), (13, 1625820), (14, 1509690), (15, 1409044), (20, 1056783), (21, 1006460), (26, 812910), (28, 754845), (30, 704522), (35, 603876), (39, 541940), (42, 503230), (49, 431340), (52, 406455), (60, 352261), (65, 325164), (70, 301938), (78, 270970), (79, 267540), (84, 251615), (91, 232260), (98, 215670), (105, 201292), (130, 162582), (140, 150969), (147, 143780), (156, 135485), (158, 133770), (182, 116130), (195, 108388), (196, 107835), (210, 100646), (237, 89180), (245, 86268), (260, 81291), (273, 77420), (294, 71890), (316, 66885), (343, 61620), (364, 58065), (390, 54194), (395, 53508), (420, 50323), (455, 46452), (474, 44590), (490, 43134), (546, 38710), (553, 38220), (588, 35945), (637, 33180), (686, 30810), (735, 28756), (780, 27097), (790, 26754), (910, 23226), (948, 22295), (980, 21567), (1027, 20580), (1029, 20540), (1092, 19355), (1106, 19110), (1185, 17836), (1274, 16590), (1365, 15484), (1372, 15405), (1470, 14378), (1580, 13377), (1659, 12740), (1715, 12324), (1820, 11613), (1911, 11060), (2054, 10290), (2058, 10270), (2212, 9555), (2370, 8918), (2548, 8295), (2730, 7742), (2765, 7644), (2940, 7189), (3081, 6860), (3185, 6636), (3318, 6370), (3430, 6162), (3822, 5530), (3871, 5460), (4108, 5145), (4116, 5135), (4459, 4740)]