20938125

素因数分解:

$3^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{859}}^1$

素因数の和:895

約数の個数: 40

約数和(自身を含む): 37612960

約数和(自身を除く): 16674835

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 125, 195, 325, 375, 625, 859, 975, 1625, 1875, 2577, 4295, 4875, 8125, 11167, 12885, 21475, 24375, 33501, 55835, 64425, 107375, 167505, 279175, 322125, 536875, 837525, 1395875, 1610625, 4187625, 6979375, 20938125]

約数ペア:

[(1, 20938125), (3, 6979375), (5, 4187625), (13, 1610625), (15, 1395875), (25, 837525), (39, 536875), (65, 322125), (75, 279175), (125, 167505), (195, 107375), (325, 64425), (375, 55835), (625, 33501), (859, 24375), (975, 21475), (1625, 12885), (1875, 11167), (2577, 8125), (4295, 4875)]