21792920

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{18787}}^1$

素因数の和:18827

約数の個数: 32

約数和(自身を含む): 50727600

約数和(自身を除く): 28934680

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 18787, 37574, 75148, 93935, 150296, 187870, 375740, 544823, 751480, 1089646, 2179292, 2724115, 4358584, 5448230, 10896460, 21792920]

約数ペア:

[(1, 21792920), (2, 10896460), (4, 5448230), (5, 4358584), (8, 2724115), (10, 2179292), (20, 1089646), (29, 751480), (40, 544823), (58, 375740), (116, 187870), (145, 150296), (232, 93935), (290, 75148), (580, 37574), (1160, 18787)]