81913840

素因数分解:

$2^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{9941}}^1$

素因数の和:10057

約数の個数: 40

約数和(自身を含む): 192318048

約数和(自身を除く): 110404208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 103, 206, 412, 515, 824, 1030, 1648, 2060, 4120, 8240, 9941, 19882, 39764, 49705, 79528, 99410, 159056, 198820, 397640, 795280, 1023923, 2047846, 4095692, 5119615, 8191384, 10239230, 16382768, 20478460, 40956920, 81913840]

約数ペア:

[(1, 81913840), (2, 40956920), (4, 20478460), (5, 16382768), (8, 10239230), (10, 8191384), (16, 5119615), (20, 4095692), (40, 2047846), (80, 1023923), (103, 795280), (206, 397640), (412, 198820), (515, 159056), (824, 99410), (1030, 79528), (1648, 49705), (2060, 39764), (4120, 19882), (8240, 9941)]