19780011

素因数分解:

$3^3\times {\mathrm{571}}^1\times {\mathrm{1283}}^1$

素因数の和:1863

約数の個数: 16

約数和(自身を含む): 29377920

約数和(自身を除く): 9597909

約数列:

[1, 3, 9, 27, 571, 1283, 1713, 3849, 5139, 11547, 15417, 34641, 732593, 2197779, 6593337, 19780011]

約数ペア:

[(1, 19780011), (3, 6593337), (9, 2197779), (27, 732593), (571, 34641), (1283, 15417), (1713, 11547), (3849, 5139)]