20598820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{859}}^1$

素因数の和:988

約数の個数: 48

約数和(自身を含む): 47678400

約数和(自身を除く): 27079580

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 109, 110, 218, 220, 436, 545, 859, 1090, 1199, 1718, 2180, 2398, 3436, 4295, 4796, 5995, 8590, 9449, 11990, 17180, 18898, 23980, 37796, 47245, 93631, 94490, 187262, 188980, 374524, 468155, 936310, 1029941, 1872620, 2059882, 4119764, 5149705, 10299410, 20598820]

約数ペア:

[(1, 20598820), (2, 10299410), (4, 5149705), (5, 4119764), (10, 2059882), (11, 1872620), (20, 1029941), (22, 936310), (44, 468155), (55, 374524), (109, 188980), (110, 187262), (218, 94490), (220, 93631), (436, 47245), (545, 37796), (859, 23980), (1090, 18898), (1199, 17180), (1718, 11990), (2180, 9449), (2398, 8590), (3436, 5995), (4295, 4796)]