20470220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{523}}^1$

素因数の和:654

約数の個数: 48

約数和(自身を含む): 45776640

約数和(自身を除く): 25306420

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 103, 190, 206, 380, 412, 515, 523, 1030, 1046, 1957, 2060, 2092, 2615, 3914, 5230, 7828, 9785, 9937, 10460, 19570, 19874, 39140, 39748, 49685, 53869, 99370, 107738, 198740, 215476, 269345, 538690, 1023511, 1077380, 2047022, 4094044, 5117555, 10235110, 20470220]

約数ペア:

[(1, 20470220), (2, 10235110), (4, 5117555), (5, 4094044), (10, 2047022), (19, 1077380), (20, 1023511), (38, 538690), (76, 269345), (95, 215476), (103, 198740), (190, 107738), (206, 99370), (380, 53869), (412, 49685), (515, 39748), (523, 39140), (1030, 19874), (1046, 19570), (1957, 10460), (2060, 9937), (2092, 9785), (2615, 7828), (3914, 5230)]