15115640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{19889}}^1$

素因数の和:19919

約数の個数: 32

約数和(自身を含む): 35802000

約数和(自身を除く): 20686360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 19889, 39778, 79556, 99445, 159112, 198890, 377891, 397780, 755782, 795560, 1511564, 1889455, 3023128, 3778910, 7557820, 15115640]

約数ペア:

[(1, 15115640), (2, 7557820), (4, 3778910), (5, 3023128), (8, 1889455), (10, 1511564), (19, 795560), (20, 755782), (38, 397780), (40, 377891), (76, 198890), (95, 159112), (152, 99445), (190, 79556), (380, 39778), (760, 19889)]