20227760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{881}}^1$

素因数の和:942

約数の個数: 80

約数和(自身を含む): 55121472

約数和(自身を除く): 34893712

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 41, 56, 70, 80, 82, 112, 140, 164, 205, 280, 287, 328, 410, 560, 574, 656, 820, 881, 1148, 1435, 1640, 1762, 2296, 2870, 3280, 3524, 4405, 4592, 5740, 6167, 7048, 8810, 11480, 12334, 14096, 17620, 22960, 24668, 30835, 35240, 36121, 49336, 61670, 70480, 72242, 98672, 123340, 144484, 180605, 246680, 252847, 288968, 361210, 493360, 505694, 577936, 722420, 1011388, 1264235, 1444840, 2022776, 2528470, 2889680, 4045552, 5056940, 10113880, 20227760]

約数ペア:

[(1, 20227760), (2, 10113880), (4, 5056940), (5, 4045552), (7, 2889680), (8, 2528470), (10, 2022776), (14, 1444840), (16, 1264235), (20, 1011388), (28, 722420), (35, 577936), (40, 505694), (41, 493360), (56, 361210), (70, 288968), (80, 252847), (82, 246680), (112, 180605), (140, 144484), (164, 123340), (205, 98672), (280, 72242), (287, 70480), (328, 61670), (410, 49336), (560, 36121), (574, 35240), (656, 30835), (820, 24668), (881, 22960), (1148, 17620), (1435, 14096), (1640, 12334), (1762, 11480), (2296, 8810), (2870, 7048), (3280, 6167), (3524, 5740), (4405, 4592)]