20977544

素因数分解:

$2^3\times 7^1\times {\mathrm{521}}^1\times {\mathrm{719}}^1$

素因数の和:1253

約数の個数: 32

約数和(自身を含む): 45100800

約数和(自身を除く): 24123256

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 521, 719, 1042, 1438, 2084, 2876, 3647, 4168, 5033, 5752, 7294, 10066, 14588, 20132, 29176, 40264, 374599, 749198, 1498396, 2622193, 2996792, 5244386, 10488772, 20977544]

約数ペア:

[(1, 20977544), (2, 10488772), (4, 5244386), (7, 2996792), (8, 2622193), (14, 1498396), (28, 749198), (56, 374599), (521, 40264), (719, 29176), (1042, 20132), (1438, 14588), (2084, 10066), (2876, 7294), (3647, 5752), (4168, 5033)]