20484680

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{13841}}^1$

素因数の和:13889

約数の個数: 32

約数和(自身を含む): 47339640

約数和(自身を除く): 26854960

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 13841, 27682, 55364, 69205, 110728, 138410, 276820, 512117, 553640, 1024234, 2048468, 2560585, 4096936, 5121170, 10242340, 20484680]

約数ペア:

[(1, 20484680), (2, 10242340), (4, 5121170), (5, 4096936), (8, 2560585), (10, 2048468), (20, 1024234), (37, 553640), (40, 512117), (74, 276820), (148, 138410), (185, 110728), (296, 69205), (370, 55364), (740, 27682), (1480, 13841)]