20935789

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{613}}^1$

素因数の和:685

約数の個数: 24

約数和(自身を含む): 26458488

約数和(自身を除く): 5522699

約数列:

[1, 7, 17, 41, 49, 119, 287, 613, 697, 833, 2009, 4291, 4879, 10421, 25133, 30037, 34153, 72947, 175931, 427261, 510629, 1231517, 2990827, 20935789]

約数ペア:

[(1, 20935789), (7, 2990827), (17, 1231517), (41, 510629), (49, 427261), (119, 175931), (287, 72947), (613, 34153), (697, 30037), (833, 25133), (2009, 10421), (4291, 4879)]