18904240

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{12437}}^1$

素因数の和:12469

約数の個数: 40

約数和(自身を含む): 46269360

約数和(自身を除く): 27365120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 12437, 24874, 49748, 62185, 99496, 124370, 198992, 236303, 248740, 472606, 497480, 945212, 994960, 1181515, 1890424, 2363030, 3780848, 4726060, 9452120, 18904240]

約数ペア:

[(1, 18904240), (2, 9452120), (4, 4726060), (5, 3780848), (8, 2363030), (10, 1890424), (16, 1181515), (19, 994960), (20, 945212), (38, 497480), (40, 472606), (76, 248740), (80, 236303), (95, 198992), (152, 124370), (190, 99496), (304, 62185), (380, 49748), (760, 24874), (1520, 12437)]