21295917

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{769}}^1$

素因数の和:973

約数の個数: 24

約数和(自身を含む): 32792760

約数和(自身を除く): 11496843

約数列:

[1, 3, 9, 17, 51, 153, 181, 543, 769, 1629, 2307, 3077, 6921, 9231, 13073, 27693, 39219, 117657, 139189, 417567, 1252701, 2366213, 7098639, 21295917]

約数ペア:

[(1, 21295917), (3, 7098639), (9, 2366213), (17, 1252701), (51, 417567), (153, 139189), (181, 117657), (543, 39219), (769, 27693), (1629, 13073), (2307, 9231), (3077, 6921)]