20417072

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{953}}^1$

素因数の和:1077

約数の個数: 40

約数和(自身を含む): 43059744

約数和(自身を除く): 22642672

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 103, 104, 206, 208, 412, 824, 953, 1339, 1648, 1906, 2678, 3812, 5356, 7624, 10712, 12389, 15248, 21424, 24778, 49556, 98159, 99112, 196318, 198224, 392636, 785272, 1276067, 1570544, 2552134, 5104268, 10208536, 20417072]

約数ペア:

[(1, 20417072), (2, 10208536), (4, 5104268), (8, 2552134), (13, 1570544), (16, 1276067), (26, 785272), (52, 392636), (103, 198224), (104, 196318), (206, 99112), (208, 98159), (412, 49556), (824, 24778), (953, 21424), (1339, 15248), (1648, 12389), (1906, 10712), (2678, 7624), (3812, 5356)]