20120221208

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{147942803}}^1$

素因数の和:147942826

約数の個数: 16

約数和(自身を含む): 39944557080

約数和(自身を除く): 19824335872

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 147942803, 295885606, 591771212, 1183542424, 2515027651, 5030055302, 10060110604, 20120221208]

約数ペア:

[(1, 20120221208), (2, 10060110604), (4, 5030055302), (8, 2515027651), (17, 1183542424), (34, 591771212), (68, 295885606), (136, 147942803)]