21538895

素因数分解:

$5^1\times 7^1\times {\mathrm{227}}^1\times {\mathrm{2711}}^1$

素因数の和:2950

約数の個数: 16

約数和(自身を含む): 29680128

約数和(自身を除く): 8141233

約数列:

[1, 5, 7, 35, 227, 1135, 1589, 2711, 7945, 13555, 18977, 94885, 615397, 3076985, 4307779, 21538895]

約数ペア:

[(1, 21538895), (5, 4307779), (7, 3076985), (35, 615397), (227, 94885), (1135, 18977), (1589, 13555), (2711, 7945)]