28370980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{128959}}^1$

素因数の和:128979

約数の個数: 24

約数和(自身を含む): 64995840

約数和(自身を除く): 36624860

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 128959, 257918, 515836, 644795, 1289590, 1418549, 2579180, 2837098, 5674196, 7092745, 14185490, 28370980]

約数ペア:

[(1, 28370980), (2, 14185490), (4, 7092745), (5, 5674196), (10, 2837098), (11, 2579180), (20, 1418549), (22, 1289590), (44, 644795), (55, 515836), (110, 257918), (220, 128959)]