90020420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{15683}}^1$

素因数の和:15740

約数の個数: 48

約数和(自身を含む): 221332608

約数和(自身を除く): 131312188

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 70, 82, 140, 164, 205, 287, 410, 574, 820, 1148, 1435, 2870, 5740, 15683, 31366, 62732, 78415, 109781, 156830, 219562, 313660, 439124, 548905, 643003, 1097810, 1286006, 2195620, 2572012, 3215015, 4501021, 6430030, 9002042, 12860060, 18004084, 22505105, 45010210, 90020420]

約数ペア:

[(1, 90020420), (2, 45010210), (4, 22505105), (5, 18004084), (7, 12860060), (10, 9002042), (14, 6430030), (20, 4501021), (28, 3215015), (35, 2572012), (41, 2195620), (70, 1286006), (82, 1097810), (140, 643003), (164, 548905), (205, 439124), (287, 313660), (410, 219562), (574, 156830), (820, 109781), (1148, 78415), (1435, 62732), (2870, 31366), (5740, 15683)]