20970010

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{293}}^1\times {\mathrm{421}}^1$

素因数の和:738

約数の個数: 32

約数和(自身を含む): 40198032

約数和(自身を除く): 19228022

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 293, 421, 586, 842, 1465, 2105, 2930, 4210, 4981, 7157, 9962, 14314, 24905, 35785, 49810, 71570, 123353, 246706, 616765, 1233530, 2097001, 4194002, 10485005, 20970010]

約数ペア:

[(1, 20970010), (2, 10485005), (5, 4194002), (10, 2097001), (17, 1233530), (34, 616765), (85, 246706), (170, 123353), (293, 71570), (421, 49810), (586, 35785), (842, 24905), (1465, 14314), (2105, 9962), (2930, 7157), (4210, 4981)]