20051110

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{911}}^1$

素因数の和:1020

約数の個数: 32

約数和(自身を含む): 37822464

約数和(自身を除く): 17771354

約数列:

[1, 2, 5, 10, 31, 62, 71, 142, 155, 310, 355, 710, 911, 1822, 2201, 4402, 4555, 9110, 11005, 22010, 28241, 56482, 64681, 129362, 141205, 282410, 323405, 646810, 2005111, 4010222, 10025555, 20051110]

約数ペア:

[(1, 20051110), (2, 10025555), (5, 4010222), (10, 2005111), (31, 646810), (62, 323405), (71, 282410), (142, 141205), (155, 129362), (310, 64681), (355, 56482), (710, 28241), (911, 22010), (1822, 11005), (2201, 9110), (4402, 4555)]