20986511

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{271}}^1$

素因数の和:351

約数の個数: 32

約数和(自身を含む): 27783168

約数和(自身を除く): 6796657

約数列:

[1, 7, 13, 23, 37, 91, 161, 259, 271, 299, 481, 851, 1897, 2093, 3367, 3523, 5957, 6233, 10027, 11063, 24661, 43631, 70189, 77441, 81029, 130351, 230621, 567203, 912457, 1614347, 2998073, 20986511]

約数ペア:

[(1, 20986511), (7, 2998073), (13, 1614347), (23, 912457), (37, 567203), (91, 230621), (161, 130351), (259, 81029), (271, 77441), (299, 70189), (481, 43631), (851, 24661), (1897, 11063), (2093, 10027), (3367, 6233), (3523, 5957)]