21290050

素因数分解:

$2^1\times 5^2\times {\mathrm{425801}}^1$

素因数の和:425813

約数の個数: 12

約数和(自身を含む): 39599586

約数和(自身を除く): 18309536

約数列:

[1, 2, 5, 10, 25, 50, 425801, 851602, 2129005, 4258010, 10645025, 21290050]

約数ペア:

[(1, 21290050), (2, 10645025), (5, 4258010), (10, 2129005), (25, 851602), (50, 425801)]