21138456

素因数分解:

$2^3\times 3^1\times {\mathrm{43}}^1\times {\mathrm{20483}}^1$

素因数の和:20535

約数の個数: 32

約数和(自身を含む): 54077760

約数和(自身を除く): 32939304

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 43, 86, 129, 172, 258, 344, 516, 1032, 20483, 40966, 61449, 81932, 122898, 163864, 245796, 491592, 880769, 1761538, 2642307, 3523076, 5284614, 7046152, 10569228, 21138456]

約数ペア:

[(1, 21138456), (2, 10569228), (3, 7046152), (4, 5284614), (6, 3523076), (8, 2642307), (12, 1761538), (24, 880769), (43, 491592), (86, 245796), (129, 163864), (172, 122898), (258, 81932), (344, 61449), (516, 40966), (1032, 20483)]