64999025

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{28571}}^1$

素因数の和:28601

約数の個数: 24

約数和(自身を含む): 99201984

約数和(自身を除く): 34202959

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 175, 325, 455, 2275, 28571, 142855, 199997, 371423, 714275, 999985, 1857115, 2599961, 4999925, 9285575, 12999805, 64999025]

約数ペア:

[(1, 64999025), (5, 12999805), (7, 9285575), (13, 4999925), (25, 2599961), (35, 1857115), (65, 999985), (91, 714275), (175, 371423), (325, 199997), (455, 142855), (2275, 28571)]