131513480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{469691}}^1$

素因数の和:469709

約数の個数: 32

約数和(自身を含む): 338178240

約数和(自身を除く): 206664760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 469691, 939382, 1878764, 2348455, 3287837, 3757528, 4696910, 6575674, 9393820, 13151348, 16439185, 18787640, 26302696, 32878370, 65756740, 131513480]

約数ペア:

[(1, 131513480), (2, 65756740), (4, 32878370), (5, 26302696), (7, 18787640), (8, 16439185), (10, 13151348), (14, 9393820), (20, 6575674), (28, 4696910), (35, 3757528), (40, 3287837), (56, 2348455), (70, 1878764), (140, 939382), (280, 469691)]