208478260

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{523}}^1\times {\mathrm{1049}}^1$

素因数の和:1600

約数の個数: 48

約数和(自身を含む): 462168000

約数和(自身を除く): 253689740

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 523, 1046, 1049, 2092, 2098, 2615, 4196, 5230, 5245, 9937, 10460, 10490, 19874, 19931, 20980, 39748, 39862, 49685, 79724, 99370, 99655, 198740, 199310, 398620, 548627, 1097254, 2194508, 2743135, 5486270, 10423913, 10972540, 20847826, 41695652, 52119565, 104239130, 208478260]

約数ペア:

[(1, 208478260), (2, 104239130), (4, 52119565), (5, 41695652), (10, 20847826), (19, 10972540), (20, 10423913), (38, 5486270), (76, 2743135), (95, 2194508), (190, 1097254), (380, 548627), (523, 398620), (1046, 199310), (1049, 198740), (2092, 99655), (2098, 99370), (2615, 79724), (4196, 49685), (5230, 39862), (5245, 39748), (9937, 20980), (10460, 19931), (10490, 19874)]