21639843

素因数分解:

$3^2\times {\mathrm{59}}^1\times {\mathrm{83}}^1\times {\mathrm{491}}^1$

素因数の和:639

約数の個数: 24

約数和(自身を含む): 32235840

約数和(自身を除く): 10595997

約数列:

[1, 3, 9, 59, 83, 177, 249, 491, 531, 747, 1473, 4419, 4897, 14691, 28969, 40753, 44073, 86907, 122259, 260721, 366777, 2404427, 7213281, 21639843]

約数ペア:

[(1, 21639843), (3, 7213281), (9, 2404427), (59, 366777), (83, 260721), (177, 122259), (249, 86907), (491, 44073), (531, 40753), (747, 28969), (1473, 14691), (4419, 4897)]