81520270

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{36887}}^1$

素因数の和:36924

約数の個数: 32

約数和(自身を含む): 167323968

約数和(自身を除く): 85803698

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 2210, 36887, 73774, 184435, 368870, 479531, 627079, 959062, 1254158, 2397655, 3135395, 4795310, 6270790, 8152027, 16304054, 40760135, 81520270]

約数ペア:

[(1, 81520270), (2, 40760135), (5, 16304054), (10, 8152027), (13, 6270790), (17, 4795310), (26, 3135395), (34, 2397655), (65, 1254158), (85, 959062), (130, 627079), (170, 479531), (221, 368870), (442, 184435), (1105, 73774), (2210, 36887)]