20512142620

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1009}}^1\times {\mathrm{32789}}^1$

素因数の和:33838

約数の個数: 48

約数和(自身を含む): 44510457600

約数和(自身を除く): 23998314980

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 1009, 2018, 4036, 5045, 10090, 20180, 31279, 32789, 62558, 65578, 125116, 131156, 156395, 163945, 312790, 327890, 625580, 655780, 1016459, 2032918, 4065836, 5082295, 10164590, 20329180, 33084101, 66168202, 132336404, 165420505, 330841010, 661682020, 1025607131, 2051214262, 4102428524, 5128035655, 10256071310, 20512142620]

約数ペア:

[(1, 20512142620), (2, 10256071310), (4, 5128035655), (5, 4102428524), (10, 2051214262), (20, 1025607131), (31, 661682020), (62, 330841010), (124, 165420505), (155, 132336404), (310, 66168202), (620, 33084101), (1009, 20329180), (2018, 10164590), (4036, 5082295), (5045, 4065836), (10090, 2032918), (20180, 1016459), (31279, 655780), (32789, 625580), (62558, 327890), (65578, 312790), (125116, 163945), (131156, 156395)]