21071197

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{4513}}^1$

素因数の和:4572

約数の個数: 16

約数和(自身を含む): 26000640

約数和(自身を除く): 4929443

約数列:

[1, 7, 23, 29, 161, 203, 667, 4513, 4669, 31591, 103799, 130877, 726593, 916139, 3010171, 21071197]

約数ペア:

[(1, 21071197), (7, 3010171), (23, 916139), (29, 726593), (161, 130877), (203, 103799), (667, 31591), (4513, 4669)]