20982815

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{233}}^1$

素因数の和:359

約数の個数: 32

約数和(自身を含む): 30191616

約数和(自身を除く): 9208801

約数列:

[1, 5, 7, 31, 35, 83, 155, 217, 233, 415, 581, 1085, 1165, 1631, 2573, 2905, 7223, 8155, 12865, 18011, 19339, 36115, 50561, 90055, 96695, 135373, 252805, 599509, 676865, 2997545, 4196563, 20982815]

約数ペア:

[(1, 20982815), (5, 4196563), (7, 2997545), (31, 676865), (35, 599509), (83, 252805), (155, 135373), (217, 96695), (233, 90055), (415, 50561), (581, 36115), (1085, 19339), (1165, 18011), (1631, 12865), (2573, 8155), (2905, 7223)]