20518490

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{881}}^1$

素因数の和:1042

約数の個数: 32

約数和(自身を含む): 39435984

約数和(自身を除く): 18917494

約数列:

[1, 2, 5, 10, 17, 34, 85, 137, 170, 274, 685, 881, 1370, 1762, 2329, 4405, 4658, 8810, 11645, 14977, 23290, 29954, 74885, 120697, 149770, 241394, 603485, 1206970, 2051849, 4103698, 10259245, 20518490]

約数ペア:

[(1, 20518490), (2, 10259245), (5, 4103698), (10, 2051849), (17, 1206970), (34, 603485), (85, 241394), (137, 149770), (170, 120697), (274, 74885), (685, 29954), (881, 23290), (1370, 14977), (1762, 11645), (2329, 8810), (4405, 4658)]