638989835

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^2\times {\mathrm{677}}^1$

素因数の和:955

約数の個数: 24

約数和(自身を含む): 844175088

約数和(自身を除く): 205185253

約数列:

[1, 5, 11, 55, 131, 655, 677, 1441, 3385, 7205, 7447, 17161, 37235, 85805, 88687, 188771, 443435, 943855, 975557, 4877785, 11617997, 58089985, 127797967, 638989835]

約数ペア:

[(1, 638989835), (5, 127797967), (11, 58089985), (55, 11617997), (131, 4877785), (655, 975557), (677, 943855), (1441, 443435), (3385, 188771), (7205, 88687), (7447, 85805), (17161, 37235)]