20718756

素因数分解:

$2^2\times 3^2\times {\mathrm{701}}^1\times {\mathrm{821}}^1$

素因数の和:1532

約数の個数: 36

約数和(自身を含む): 52511004

約数和(自身を除く): 31792248

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 701, 821, 1402, 1642, 2103, 2463, 2804, 3284, 4206, 4926, 6309, 7389, 8412, 9852, 12618, 14778, 25236, 29556, 575521, 1151042, 1726563, 2302084, 3453126, 5179689, 6906252, 10359378, 20718756]

約数ペア:

[(1, 20718756), (2, 10359378), (3, 6906252), (4, 5179689), (6, 3453126), (9, 2302084), (12, 1726563), (18, 1151042), (36, 575521), (701, 29556), (821, 25236), (1402, 14778), (1642, 12618), (2103, 9852), (2463, 8412), (2804, 7389), (3284, 6309), (4206, 4926)]