20392826540

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1248031}}^1$

素因数の和:1248102

約数の個数: 48

約数和(自身を含む): 46127262720

約数和(自身を除く): 25734436180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 43, 76, 86, 95, 172, 190, 215, 380, 430, 817, 860, 1634, 3268, 4085, 8170, 16340, 1248031, 2496062, 4992124, 6240155, 12480310, 23712589, 24960620, 47425178, 53665333, 94850356, 107330666, 118562945, 214661332, 237125890, 268326665, 474251780, 536653330, 1019641327, 1073306660, 2039282654, 4078565308, 5098206635, 10196413270, 20392826540]

約数ペア:

[(1, 20392826540), (2, 10196413270), (4, 5098206635), (5, 4078565308), (10, 2039282654), (19, 1073306660), (20, 1019641327), (38, 536653330), (43, 474251780), (76, 268326665), (86, 237125890), (95, 214661332), (172, 118562945), (190, 107330666), (215, 94850356), (380, 53665333), (430, 47425178), (817, 24960620), (860, 23712589), (1634, 12480310), (3268, 6240155), (4085, 4992124), (8170, 2496062), (16340, 1248031)]