217398506

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{421}}^1\times {\mathrm{19861}}^1$

素因数の和:20297

約数の個数: 16

約数和(自身を含む): 352034088

約数和(自身を除く): 134635582

約数列:

[1, 2, 13, 26, 421, 842, 5473, 10946, 19861, 39722, 258193, 516386, 8361481, 16722962, 108699253, 217398506]

約数ペア:

[(1, 217398506), (2, 108699253), (13, 16722962), (26, 8361481), (421, 516386), (842, 258193), (5473, 39722), (10946, 19861)]