16890920

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{2333}}^1$

素因数の和:2525

約数の個数: 32

約数和(自身を含む): 38230920

約数和(自身を除く): 21340000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 2333, 3620, 4666, 7240, 9332, 11665, 18664, 23330, 46660, 93320, 422273, 844546, 1689092, 2111365, 3378184, 4222730, 8445460, 16890920]

約数ペア:

[(1, 16890920), (2, 8445460), (4, 4222730), (5, 3378184), (8, 2111365), (10, 1689092), (20, 844546), (40, 422273), (181, 93320), (362, 46660), (724, 23330), (905, 18664), (1448, 11665), (1810, 9332), (2333, 7240), (3620, 4666)]