261330290

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{118249}}^1$

素因数の和:118286

約数の個数: 32

約数和(自身を含む): 536382000

約数和(自身を除く): 275051710

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 2210, 118249, 236498, 591245, 1182490, 1537237, 2010233, 3074474, 4020466, 7686185, 10051165, 15372370, 20102330, 26133029, 52266058, 130665145, 261330290]

約数ペア:

[(1, 261330290), (2, 130665145), (5, 52266058), (10, 26133029), (13, 20102330), (17, 15372370), (26, 10051165), (34, 7686185), (65, 4020466), (85, 3074474), (130, 2010233), (170, 1537237), (221, 1182490), (442, 591245), (1105, 236498), (2210, 118249)]