20713089

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:249

約数の個数: 32

約数和(自身を含む): 30481920

約数和(自身を除く): 9768831

約数列:

[1, 3, 17, 51, 53, 79, 97, 159, 237, 291, 901, 1343, 1649, 2703, 4029, 4187, 4947, 5141, 7663, 12561, 15423, 22989, 71179, 87397, 130271, 213537, 262191, 390813, 406139, 1218417, 6904363, 20713089]

約数ペア:

[(1, 20713089), (3, 6904363), (17, 1218417), (51, 406139), (53, 390813), (79, 262191), (97, 213537), (159, 130271), (237, 87397), (291, 71179), (901, 22989), (1343, 15423), (1649, 12561), (2703, 7663), (4029, 5141), (4187, 4947)]