20512472980

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{379}}^1\times {\mathrm{14951}}^1$

素因数の和:15520

約数の個数: 48

約数和(自身を含む): 43431373440

約数和(自身を除く): 22918900460

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 379, 724, 758, 905, 1516, 1810, 1895, 3620, 3790, 7580, 14951, 29902, 59804, 68599, 74755, 137198, 149510, 274396, 299020, 342995, 685990, 1371980, 2706131, 5412262, 5666429, 10824524, 11332858, 13530655, 22665716, 27061310, 28332145, 54122620, 56664290, 113328580, 1025623649, 2051247298, 4102494596, 5128118245, 10256236490, 20512472980]

約数ペア:

[(1, 20512472980), (2, 10256236490), (4, 5128118245), (5, 4102494596), (10, 2051247298), (20, 1025623649), (181, 113328580), (362, 56664290), (379, 54122620), (724, 28332145), (758, 27061310), (905, 22665716), (1516, 13530655), (1810, 11332858), (1895, 10824524), (3620, 5666429), (3790, 5412262), (7580, 2706131), (14951, 1371980), (29902, 685990), (59804, 342995), (68599, 299020), (74755, 274396), (137198, 149510)]