21796875

素因数分解:

$3^2\times 5^7\times {\mathrm{31}}^1$

素因数の和:72

約数の個数: 48

約数和(自身を含む): 40624896

約数和(自身を除く): 18828021

約数列:

[1, 3, 5, 9, 15, 25, 31, 45, 75, 93, 125, 155, 225, 279, 375, 465, 625, 775, 1125, 1395, 1875, 2325, 3125, 3875, 5625, 6975, 9375, 11625, 15625, 19375, 28125, 34875, 46875, 58125, 78125, 96875, 140625, 174375, 234375, 290625, 484375, 703125, 871875, 1453125, 2421875, 4359375, 7265625, 21796875]

約数ペア:

[(1, 21796875), (3, 7265625), (5, 4359375), (9, 2421875), (15, 1453125), (25, 871875), (31, 703125), (45, 484375), (75, 290625), (93, 234375), (125, 174375), (155, 140625), (225, 96875), (279, 78125), (375, 58125), (465, 46875), (625, 34875), (775, 28125), (1125, 19375), (1395, 15625), (1875, 11625), (2325, 9375), (3125, 6975), (3875, 5625)]