21591016

素因数分解:

$2^3\times {\mathrm{79}}^1\times {\mathrm{127}}^1\times {\mathrm{269}}^1$

素因数の和:481

約数の個数: 32

約数和(自身を含む): 41472000

約数和(自身を除く): 19880984

約数列:

[1, 2, 4, 8, 79, 127, 158, 254, 269, 316, 508, 538, 632, 1016, 1076, 2152, 10033, 20066, 21251, 34163, 40132, 42502, 68326, 80264, 85004, 136652, 170008, 273304, 2698877, 5397754, 10795508, 21591016]

約数ペア:

[(1, 21591016), (2, 10795508), (4, 5397754), (8, 2698877), (79, 273304), (127, 170008), (158, 136652), (254, 85004), (269, 80264), (316, 68326), (508, 42502), (538, 40132), (632, 34163), (1016, 21251), (1076, 20066), (2152, 10033)]