19988913025

素因数分解:

$5^2\times {\mathrm{23}}^2\times {\mathrm{1511449}}^1$

素因数の和:1511505

約数の個数: 18

約数和(自身を含む): 25910787350

約数和(自身を除く): 5921874325

約数列:

[1, 5, 23, 25, 115, 529, 575, 2645, 13225, 1511449, 7557245, 34763327, 37786225, 173816635, 799556521, 869083175, 3997782605, 19988913025]

約数ペア:

[(1, 19988913025), (5, 3997782605), (23, 869083175), (25, 799556521), (115, 173816635), (529, 37786225), (575, 34763327), (2645, 7557245), (13225, 1511449)]