20455215

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{821}}^1$

素因数の和:991

約数の個数: 32

約数和(自身を含む): 35983872

約数和(自身を除く): 15528657

約数列:

[1, 3, 5, 11, 15, 33, 55, 151, 165, 453, 755, 821, 1661, 2265, 2463, 4105, 4983, 8305, 9031, 12315, 24915, 27093, 45155, 123971, 135465, 371913, 619855, 1363681, 1859565, 4091043, 6818405, 20455215]

約数ペア:

[(1, 20455215), (3, 6818405), (5, 4091043), (11, 1859565), (15, 1363681), (33, 619855), (55, 371913), (151, 135465), (165, 123971), (453, 45155), (755, 27093), (821, 24915), (1661, 12315), (2265, 9031), (2463, 8305), (4105, 4983)]