20490380

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{33049}}^1$

素因数の和:33089

約数の個数: 24

約数和(自身を含む): 44419200

約数和(自身を除く): 23928820

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 33049, 66098, 132196, 165245, 330490, 660980, 1024519, 2049038, 4098076, 5122595, 10245190, 20490380]

約数ペア:

[(1, 20490380), (2, 10245190), (4, 5122595), (5, 4098076), (10, 2049038), (20, 1024519), (31, 660980), (62, 330490), (124, 165245), (155, 132196), (310, 66098), (620, 33049)]