20819407

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{3301}}^1$

素因数の和:3378

約数の個数: 16

約数和(自身を含む): 25676352

約数和(自身を除く): 4856945

約数列:

[1, 7, 17, 53, 119, 371, 901, 3301, 6307, 23107, 56117, 174953, 392819, 1224671, 2974201, 20819407]

約数ペア:

[(1, 20819407), (7, 2974201), (17, 1224671), (53, 392819), (119, 174953), (371, 56117), (901, 23107), (3301, 6307)]