20615677505

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{691}}^1\times {\mathrm{2711}}^1$

素因数の和:3509

約数の個数: 32

約数和(自身を含む): 25943556096

約数和(自身を除く): 5327878591

約数列:

[1, 5, 31, 71, 155, 355, 691, 2201, 2711, 3455, 11005, 13555, 21421, 49061, 84041, 107105, 192481, 245305, 420205, 962405, 1520891, 1873301, 5966911, 7604455, 9366505, 29834555, 58072331, 133004371, 290361655, 665021855, 4123135501, 20615677505]

約数ペア:

[(1, 20615677505), (5, 4123135501), (31, 665021855), (71, 290361655), (155, 133004371), (355, 58072331), (691, 29834555), (2201, 9366505), (2711, 7604455), (3455, 5966911), (11005, 1873301), (13555, 1520891), (21421, 962405), (49061, 420205), (84041, 245305), (107105, 192481)]