20171140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{277}}^1\times {\mathrm{331}}^1$

素因数の和:628

約数の個数: 48

約数和(自身を含む): 46517184

約数和(自身を除く): 26346044

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 277, 331, 554, 662, 1108, 1324, 1385, 1655, 2770, 3047, 3310, 3641, 5540, 6094, 6620, 7282, 12188, 14564, 15235, 18205, 30470, 36410, 60940, 72820, 91687, 183374, 366748, 458435, 916870, 1008557, 1833740, 2017114, 4034228, 5042785, 10085570, 20171140]

約数ペア:

[(1, 20171140), (2, 10085570), (4, 5042785), (5, 4034228), (10, 2017114), (11, 1833740), (20, 1008557), (22, 916870), (44, 458435), (55, 366748), (110, 183374), (220, 91687), (277, 72820), (331, 60940), (554, 36410), (662, 30470), (1108, 18205), (1324, 15235), (1385, 14564), (1655, 12188), (2770, 7282), (3047, 6620), (3310, 6094), (3641, 5540)]