20178390980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{356887}}^1$

素因数の和:357164

約数の個数: 48

約数和(自身を含む): 46406860416

約数和(自身を除く): 26228469436

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 257, 514, 1028, 1285, 2570, 2827, 5140, 5654, 11308, 14135, 28270, 56540, 356887, 713774, 1427548, 1784435, 3568870, 3925757, 7137740, 7851514, 15703028, 19628785, 39257570, 78515140, 91719959, 183439918, 366879836, 458599795, 917199590, 1008919549, 1834399180, 2017839098, 4035678196, 5044597745, 10089195490, 20178390980]

約数ペア:

[(1, 20178390980), (2, 10089195490), (4, 5044597745), (5, 4035678196), (10, 2017839098), (11, 1834399180), (20, 1008919549), (22, 917199590), (44, 458599795), (55, 366879836), (110, 183439918), (220, 91719959), (257, 78515140), (514, 39257570), (1028, 19628785), (1285, 15703028), (2570, 7851514), (2827, 7137740), (5140, 3925757), (5654, 3568870), (11308, 1784435), (14135, 1427548), (28270, 713774), (56540, 356887)]