21242901

素因数分解:

$3^1\times {\mathrm{109}}^1\times {\mathrm{167}}^1\times {\mathrm{389}}^1$

素因数の和:668

約数の個数: 16

約数和(自身を含む): 28828800

約数和(自身を除く): 7585899

約数列:

[1, 3, 109, 167, 327, 389, 501, 1167, 18203, 42401, 54609, 64963, 127203, 194889, 7080967, 21242901]

約数ペア:

[(1, 21242901), (3, 7080967), (109, 194889), (167, 127203), (327, 64963), (389, 54609), (501, 42401), (1167, 18203)]