65521625

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{661}}^1$

素因数の和:750

約数の個数: 32

約数和(自身を含む): 89640096

約数和(自身を除く): 24118471

約数列:

[1, 5, 13, 25, 61, 65, 125, 305, 325, 661, 793, 1525, 1625, 3305, 3965, 7625, 8593, 16525, 19825, 40321, 42965, 82625, 99125, 201605, 214825, 524173, 1008025, 1074125, 2620865, 5040125, 13104325, 65521625]

約数ペア:

[(1, 65521625), (5, 13104325), (13, 5040125), (25, 2620865), (61, 1074125), (65, 1008025), (125, 524173), (305, 214825), (325, 201605), (661, 99125), (793, 82625), (1525, 42965), (1625, 40321), (3305, 19825), (3965, 16525), (7625, 8593)]