12690980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{21881}}^1$

素因数の和:21919

約数の個数: 24

約数和(自身を含む): 27571320

約数和(自身を除く): 14880340

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 21881, 43762, 87524, 109405, 218810, 437620, 634549, 1269098, 2538196, 3172745, 6345490, 12690980]

約数ペア:

[(1, 12690980), (2, 6345490), (4, 3172745), (5, 2538196), (10, 1269098), (20, 634549), (29, 437620), (58, 218810), (116, 109405), (145, 87524), (290, 43762), (580, 21881)]