21657375

素因数分解:

$3^5\times 5^3\times {\mathrm{23}}^1\times {\mathrm{31}}^1$

素因数の和:84

約数の個数: 96

約数和(自身を含む): 43610112

約数和(自身を除く): 21952737

約数列:

[1, 3, 5, 9, 15, 23, 25, 27, 31, 45, 69, 75, 81, 93, 115, 125, 135, 155, 207, 225, 243, 279, 345, 375, 405, 465, 575, 621, 675, 713, 775, 837, 1035, 1125, 1215, 1395, 1725, 1863, 2025, 2139, 2325, 2511, 2875, 3105, 3375, 3565, 3875, 4185, 5175, 5589, 6075, 6417, 6975, 7533, 8625, 9315, 10125, 10695, 11625, 12555, 15525, 17825, 19251, 20925, 25875, 27945, 30375, 32085, 34875, 37665, 46575, 53475, 57753, 62775, 77625, 89125, 96255, 104625, 139725, 160425, 173259, 188325, 232875, 267375, 288765, 313875, 481275, 698625, 802125, 866295, 941625, 1443825, 2406375, 4331475, 7219125, 21657375]

約数ペア:

[(1, 21657375), (3, 7219125), (5, 4331475), (9, 2406375), (15, 1443825), (23, 941625), (25, 866295), (27, 802125), (31, 698625), (45, 481275), (69, 313875), (75, 288765), (81, 267375), (93, 232875), (115, 188325), (125, 173259), (135, 160425), (155, 139725), (207, 104625), (225, 96255), (243, 89125), (279, 77625), (345, 62775), (375, 57753), (405, 53475), (465, 46575), (575, 37665), (621, 34875), (675, 32085), (713, 30375), (775, 27945), (837, 25875), (1035, 20925), (1125, 19251), (1215, 17825), (1395, 15525), (1725, 12555), (1863, 11625), (2025, 10695), (2139, 10125), (2325, 9315), (2511, 8625), (2875, 7533), (3105, 6975), (3375, 6417), (3565, 6075), (3875, 5589), (4185, 5175)]