311927120

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{28051}}^1$

素因数の和:28203

約数の個数: 40

約数和(自身を含む): 730474080

約数和(自身を除く): 418546960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 556, 695, 1112, 1390, 2224, 2780, 5560, 11120, 28051, 56102, 112204, 140255, 224408, 280510, 448816, 561020, 1122040, 2244080, 3899089, 7798178, 15596356, 19495445, 31192712, 38990890, 62385424, 77981780, 155963560, 311927120]

約数ペア:

[(1, 311927120), (2, 155963560), (4, 77981780), (5, 62385424), (8, 38990890), (10, 31192712), (16, 19495445), (20, 15596356), (40, 7798178), (80, 3899089), (139, 2244080), (278, 1122040), (556, 561020), (695, 448816), (1112, 280510), (1390, 224408), (2224, 140255), (2780, 112204), (5560, 56102), (11120, 28051)]