18853960

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3391}}^1$

素因数の和:3541

約数の個数: 32

約数和(自身を含む): 42739200

約数和(自身を除く): 23885240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 3391, 5560, 6782, 13564, 16955, 27128, 33910, 67820, 135640, 471349, 942698, 1885396, 2356745, 3770792, 4713490, 9426980, 18853960]

約数ペア:

[(1, 18853960), (2, 9426980), (4, 4713490), (5, 3770792), (8, 2356745), (10, 1885396), (20, 942698), (40, 471349), (139, 135640), (278, 67820), (556, 33910), (695, 27128), (1112, 16955), (1390, 13564), (2780, 6782), (3391, 5560)]