15311780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{881}}^1$

素因数の和:980

約数の個数: 48

約数和(自身を含む): 35562240

約数和(自身を除く): 20250460

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 79, 110, 158, 220, 316, 395, 790, 869, 881, 1580, 1738, 1762, 3476, 3524, 4345, 4405, 8690, 8810, 9691, 17380, 17620, 19382, 38764, 48455, 69599, 96910, 139198, 193820, 278396, 347995, 695990, 765589, 1391980, 1531178, 3062356, 3827945, 7655890, 15311780]

約数ペア:

[(1, 15311780), (2, 7655890), (4, 3827945), (5, 3062356), (10, 1531178), (11, 1391980), (20, 765589), (22, 695990), (44, 347995), (55, 278396), (79, 193820), (110, 139198), (158, 96910), (220, 69599), (316, 48455), (395, 38764), (790, 19382), (869, 17620), (881, 17380), (1580, 9691), (1738, 8810), (1762, 8690), (3476, 4405), (3524, 4345)]