21291219061

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{379}}^1\times {\mathrm{216901}}^1$

素因数の和:217324

約数の個数: 16

約数和(自身を含む): 25056519040

約数和(自身を除く): 3765299979

約数列:

[1, 7, 37, 259, 379, 2653, 14023, 98161, 216901, 1518307, 8025337, 56177359, 82205479, 575438353, 3041602723, 21291219061]

約数ペア:

[(1, 21291219061), (7, 3041602723), (37, 575438353), (259, 82205479), (379, 56177359), (2653, 8025337), (14023, 1518307), (98161, 216901)]