20804571

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{1009}}^1$

素因数の和:1123

約数の個数: 24

約数和(自身を含む): 31512000

約数和(自身を除く): 10707429

約数列:

[1, 3, 9, 29, 79, 87, 237, 261, 711, 1009, 2291, 3027, 6873, 9081, 20619, 29261, 79711, 87783, 239133, 263349, 717399, 2311619, 6934857, 20804571]

約数ペア:

[(1, 20804571), (3, 6934857), (9, 2311619), (29, 717399), (79, 263349), (87, 239133), (237, 87783), (261, 79711), (711, 29261), (1009, 20619), (2291, 9081), (3027, 6873)]