20105911

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1\times {\mathrm{521}}^1$

素因数の和:714

約数の個数: 16

約数和(自身を含む): 23803200

約数和(自身を除く): 3697289

約数列:

[1, 7, 37, 149, 259, 521, 1043, 3647, 5513, 19277, 38591, 77629, 134939, 543403, 2872273, 20105911]

約数ペア:

[(1, 20105911), (7, 2872273), (37, 543403), (149, 134939), (259, 77629), (521, 38591), (1043, 19277), (3647, 5513)]