20499921

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{2111}}^1$

素因数の和:2213

約数の個数: 24

約数和(自身を含む): 32288256

約数和(自身を除く): 11788335

約数列:

[1, 3, 9, 13, 39, 83, 117, 249, 747, 1079, 2111, 3237, 6333, 9711, 18999, 27443, 82329, 175213, 246987, 525639, 1576917, 2277769, 6833307, 20499921]

約数ペア:

[(1, 20499921), (3, 6833307), (9, 2277769), (13, 1576917), (39, 525639), (83, 246987), (117, 175213), (249, 82329), (747, 27443), (1079, 18999), (2111, 9711), (3237, 6333)]