278879320

素因数分解:

$2^3\times 5^1\times {\mathrm{1637}}^1\times {\mathrm{4259}}^1$

素因数の和:5907

約数の個数: 32

約数和(自身を含む): 628009200

約数和(自身を除く): 349129880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1637, 3274, 4259, 6548, 8185, 8518, 13096, 16370, 17036, 21295, 32740, 34072, 42590, 65480, 85180, 170360, 6971983, 13943966, 27887932, 34859915, 55775864, 69719830, 139439660, 278879320]

約数ペア:

[(1, 278879320), (2, 139439660), (4, 69719830), (5, 55775864), (8, 34859915), (10, 27887932), (20, 13943966), (40, 6971983), (1637, 170360), (3274, 85180), (4259, 65480), (6548, 42590), (8185, 34072), (8518, 32740), (13096, 21295), (16370, 17036)]