21291266164

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{85333}}^1$

素因数の和:85437

約数の個数: 72

約数和(自身を含む): 46305641760

約数和(自身を除く): 25014375596

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 49, 67, 76, 98, 133, 134, 196, 266, 268, 469, 532, 931, 938, 1273, 1862, 1876, 2546, 3283, 3724, 5092, 6566, 8911, 13132, 17822, 35644, 62377, 85333, 124754, 170666, 249508, 341332, 597331, 1194662, 1621327, 2389324, 3242654, 4181317, 5717311, 6485308, 8362634, 11349289, 11434622, 16725268, 22698578, 22869244, 40021177, 45397156, 79445023, 80042354, 108628909, 158890046, 160084708, 217257818, 280148239, 317780092, 434515636, 560296478, 760402363, 1120592956, 1520804726, 3041609452, 5322816541, 10645633082, 21291266164]

約数ペア:

[(1, 21291266164), (2, 10645633082), (4, 5322816541), (7, 3041609452), (14, 1520804726), (19, 1120592956), (28, 760402363), (38, 560296478), (49, 434515636), (67, 317780092), (76, 280148239), (98, 217257818), (133, 160084708), (134, 158890046), (196, 108628909), (266, 80042354), (268, 79445023), (469, 45397156), (532, 40021177), (931, 22869244), (938, 22698578), (1273, 16725268), (1862, 11434622), (1876, 11349289), (2546, 8362634), (3283, 6485308), (3724, 5717311), (5092, 4181317), (6566, 3242654), (8911, 2389324), (13132, 1621327), (17822, 1194662), (35644, 597331), (62377, 341332), (85333, 249508), (124754, 170666)]