20281835

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{4357}}^1$

素因数の和:4395

約数の個数: 24

約数和(自身を含む): 29808720

約数和(自身を除く): 9526885

約数列:

[1, 5, 7, 19, 35, 49, 95, 133, 245, 665, 931, 4357, 4655, 21785, 30499, 82783, 152495, 213493, 413915, 579481, 1067465, 2897405, 4056367, 20281835]

約数ペア:

[(1, 20281835), (5, 4056367), (7, 2897405), (19, 1067465), (35, 579481), (49, 413915), (95, 213493), (133, 152495), (245, 82783), (665, 30499), (931, 21785), (4357, 4655)]