28631875

素因数分解:

$5^4\times {\mathrm{61}}^1\times {\mathrm{751}}^1$

素因数の和:832

約数の個数: 20

約数和(自身を含む): 36413344

約数和(自身を除く): 7781469

約数列:

[1, 5, 25, 61, 125, 305, 625, 751, 1525, 3755, 7625, 18775, 38125, 45811, 93875, 229055, 469375, 1145275, 5726375, 28631875]

約数ペア:

[(1, 28631875), (5, 5726375), (25, 1145275), (61, 469375), (125, 229055), (305, 93875), (625, 45811), (751, 38125), (1525, 18775), (3755, 7625)]