20159984

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{941}}^1$

素因数の和:1065

約数の個数: 40

約数和(自身を含む): 42518112

約数和(自身を除く): 22358128

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 103, 104, 206, 208, 412, 824, 941, 1339, 1648, 1882, 2678, 3764, 5356, 7528, 10712, 12233, 15056, 21424, 24466, 48932, 96923, 97864, 193846, 195728, 387692, 775384, 1259999, 1550768, 2519998, 5039996, 10079992, 20159984]

約数ペア:

[(1, 20159984), (2, 10079992), (4, 5039996), (8, 2519998), (13, 1550768), (16, 1259999), (26, 775384), (52, 387692), (103, 195728), (104, 193846), (206, 97864), (208, 96923), (412, 48932), (824, 24466), (941, 21424), (1339, 15056), (1648, 12233), (1882, 10712), (2678, 7528), (3764, 5356)]