21179907

素因数分解:

$3^3\times 7^3\times {\mathrm{2287}}^1$

素因数の和:2317

約数の個数: 32

約数和(自身を含む): 36608000

約数和(自身を除く): 15428093

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 343, 441, 1029, 1323, 2287, 3087, 6861, 9261, 16009, 20583, 48027, 61749, 112063, 144081, 336189, 432243, 784441, 1008567, 2353323, 3025701, 7059969, 21179907]

約数ペア:

[(1, 21179907), (3, 7059969), (7, 3025701), (9, 2353323), (21, 1008567), (27, 784441), (49, 432243), (63, 336189), (147, 144081), (189, 112063), (343, 61749), (441, 48027), (1029, 20583), (1323, 16009), (2287, 9261), (3087, 6861)]