20053125

素因数分解:

$3^2\times 5^5\times {\mathrm{23}}^1\times {\mathrm{31}}^1$

素因数の和:85

約数の個数: 72

約数和(自身を含む): 38997504

約数和(自身を除く): 18944379

約数列:

[1, 3, 5, 9, 15, 23, 25, 31, 45, 69, 75, 93, 115, 125, 155, 207, 225, 279, 345, 375, 465, 575, 625, 713, 775, 1035, 1125, 1395, 1725, 1875, 2139, 2325, 2875, 3125, 3565, 3875, 5175, 5625, 6417, 6975, 8625, 9375, 10695, 11625, 14375, 17825, 19375, 25875, 28125, 32085, 34875, 43125, 53475, 58125, 71875, 89125, 96875, 129375, 160425, 174375, 215625, 267375, 290625, 445625, 646875, 802125, 871875, 1336875, 2228125, 4010625, 6684375, 20053125]

約数ペア:

[(1, 20053125), (3, 6684375), (5, 4010625), (9, 2228125), (15, 1336875), (23, 871875), (25, 802125), (31, 646875), (45, 445625), (69, 290625), (75, 267375), (93, 215625), (115, 174375), (125, 160425), (155, 129375), (207, 96875), (225, 89125), (279, 71875), (345, 58125), (375, 53475), (465, 43125), (575, 34875), (625, 32085), (713, 28125), (775, 25875), (1035, 19375), (1125, 17825), (1395, 14375), (1725, 11625), (1875, 10695), (2139, 9375), (2325, 8625), (2875, 6975), (3125, 6417), (3565, 5625), (3875, 5175)]