20539778

素因数分解:

$2^1\times 7^1\times {\mathrm{821}}^1\times {\mathrm{1787}}^1$

素因数の和:2617

約数の個数: 16

約数和(自身を含む): 35273664

約数和(自身を除く): 14733886

約数列:

[1, 2, 7, 14, 821, 1642, 1787, 3574, 5747, 11494, 12509, 25018, 1467127, 2934254, 10269889, 20539778]

約数ペア:

[(1, 20539778), (2, 10269889), (7, 2934254), (14, 1467127), (821, 25018), (1642, 12509), (1787, 11494), (3574, 5747)]