64750625

素因数分解:

$5^4\times {\mathrm{211}}^1\times {\mathrm{491}}^1$

素因数の和:722

約数の個数: 20

約数和(自身を含む): 81461424

約数和(自身を除く): 16710799

約数列:

[1, 5, 25, 125, 211, 491, 625, 1055, 2455, 5275, 12275, 26375, 61375, 103601, 131875, 306875, 518005, 2590025, 12950125, 64750625]

約数ペア:

[(1, 64750625), (5, 12950125), (25, 2590025), (125, 518005), (211, 306875), (491, 131875), (625, 103601), (1055, 61375), (2455, 26375), (5275, 12275)]