278701640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{995363}}^1$

素因数の和:995381

約数の個数: 32

約数和(自身を含む): 716662080

約数和(自身を除く): 437960440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 995363, 1990726, 3981452, 4976815, 6967541, 7962904, 9953630, 13935082, 19907260, 27870164, 34837705, 39814520, 55740328, 69675410, 139350820, 278701640]

約数ペア:

[(1, 278701640), (2, 139350820), (4, 69675410), (5, 55740328), (7, 39814520), (8, 34837705), (10, 27870164), (14, 19907260), (20, 13935082), (28, 9953630), (35, 7962904), (40, 6967541), (56, 4976815), (70, 3981452), (140, 1990726), (280, 995363)]