2115620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:204

約数の個数: 48

約数和(自身を含む): 4892160

約数和(自身を除く): 2776540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 103, 130, 158, 206, 260, 316, 395, 412, 515, 790, 1027, 1030, 1339, 1580, 2054, 2060, 2678, 4108, 5135, 5356, 6695, 8137, 10270, 13390, 16274, 20540, 26780, 32548, 40685, 81370, 105781, 162740, 211562, 423124, 528905, 1057810, 2115620]

約数ペア:

[(1, 2115620), (2, 1057810), (4, 528905), (5, 423124), (10, 211562), (13, 162740), (20, 105781), (26, 81370), (52, 40685), (65, 32548), (79, 26780), (103, 20540), (130, 16274), (158, 13390), (206, 10270), (260, 8137), (316, 6695), (395, 5356), (412, 5135), (515, 4108), (790, 2678), (1027, 2060), (1030, 2054), (1339, 1580)]