21986090

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{443}}^1\times {\mathrm{709}}^1$

素因数の和:1166

約数の個数: 32

約数和(自身を含む): 45394560

約数和(自身を除く): 23408470

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 443, 709, 886, 1418, 2215, 3101, 3545, 4430, 4963, 6202, 7090, 9926, 15505, 24815, 31010, 49630, 314087, 628174, 1570435, 2198609, 3140870, 4397218, 10993045, 21986090]

約数ペア:

[(1, 21986090), (2, 10993045), (5, 4397218), (7, 3140870), (10, 2198609), (14, 1570435), (35, 628174), (70, 314087), (443, 49630), (709, 31010), (886, 24815), (1418, 15505), (2215, 9926), (3101, 7090), (3545, 6202), (4430, 4963)]