81019850

素因数分解:

$2^1\times 5^2\times {\mathrm{157}}^1\times {\mathrm{10321}}^1$

素因数の和:10490

約数の個数: 24

約数和(自身を含む): 151671468

約数和(自身を除く): 70651618

約数列:

[1, 2, 5, 10, 25, 50, 157, 314, 785, 1570, 3925, 7850, 10321, 20642, 51605, 103210, 258025, 516050, 1620397, 3240794, 8101985, 16203970, 40509925, 81019850]

約数ペア:

[(1, 81019850), (2, 40509925), (5, 16203970), (10, 8101985), (25, 3240794), (50, 1620397), (157, 516050), (314, 258025), (785, 103210), (1570, 51605), (3925, 20642), (7850, 10321)]