209301561

素因数分解:

$3^2\times 7^1\times {\mathrm{331}}^1\times {\mathrm{10037}}^1$

素因数の和:10381

約数の個数: 24

約数和(自身を含む): 346592064

約数和(自身を除く): 137290503

約数列:

[1, 3, 7, 9, 21, 63, 331, 993, 2317, 2979, 6951, 10037, 20853, 30111, 70259, 90333, 210777, 632331, 3322247, 9966741, 23255729, 29900223, 69767187, 209301561]

約数ペア:

[(1, 209301561), (3, 69767187), (7, 29900223), (9, 23255729), (21, 9966741), (63, 3322247), (331, 632331), (993, 210777), (2317, 90333), (2979, 70259), (6951, 30111), (10037, 20853)]