20153988

素因数分解:

$2^2\times 3^3\times {\mathrm{181}}^1\times {\mathrm{1031}}^1$

素因数の和:1225

約数の個数: 48

約数和(自身を含む): 52590720

約数和(自身を除く): 32436732

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 181, 362, 543, 724, 1031, 1086, 1629, 2062, 2172, 3093, 3258, 4124, 4887, 6186, 6516, 9279, 9774, 12372, 18558, 19548, 27837, 37116, 55674, 111348, 186611, 373222, 559833, 746444, 1119666, 1679499, 2239332, 3358998, 5038497, 6717996, 10076994, 20153988]

約数ペア:

[(1, 20153988), (2, 10076994), (3, 6717996), (4, 5038497), (6, 3358998), (9, 2239332), (12, 1679499), (18, 1119666), (27, 746444), (36, 559833), (54, 373222), (108, 186611), (181, 111348), (362, 55674), (543, 37116), (724, 27837), (1031, 19548), (1086, 18558), (1629, 12372), (2062, 9774), (2172, 9279), (3093, 6516), (3258, 6186), (4124, 4887)]