21015016

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{5081}}^1$

素因数の和:5145

約数の個数: 32

約数和(自身を含む): 43908480

約数和(自身を除く): 22893464

約数列:

[1, 2, 4, 8, 11, 22, 44, 47, 88, 94, 188, 376, 517, 1034, 2068, 4136, 5081, 10162, 20324, 40648, 55891, 111782, 223564, 238807, 447128, 477614, 955228, 1910456, 2626877, 5253754, 10507508, 21015016]

約数ペア:

[(1, 21015016), (2, 10507508), (4, 5253754), (8, 2626877), (11, 1910456), (22, 955228), (44, 477614), (47, 447128), (88, 238807), (94, 223564), (188, 111782), (376, 55891), (517, 40648), (1034, 20324), (2068, 10162), (4136, 5081)]