20870773

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1$

素因数の和:217

約数の個数: 32

約数和(自身を含む): 27279360

約数和(自身を除く): 6408587

約数列:

[1, 7, 11, 47, 73, 77, 79, 329, 511, 517, 553, 803, 869, 3431, 3619, 3713, 5621, 5767, 6083, 24017, 25991, 37741, 40369, 40843, 63437, 264187, 271049, 285901, 444059, 1897343, 2981539, 20870773]

約数ペア:

[(1, 20870773), (7, 2981539), (11, 1897343), (47, 444059), (73, 285901), (77, 271049), (79, 264187), (329, 63437), (511, 40843), (517, 40369), (553, 37741), (803, 25991), (869, 24017), (3431, 6083), (3619, 5767), (3713, 5621)]