68220920

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{15647}}^1$

素因数の和:15767

約数の個数: 32

約数和(自身を含む): 154915200

約数和(自身を除く): 86694280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 15647, 31294, 62588, 78235, 125176, 156470, 312940, 625880, 1705523, 3411046, 6822092, 8527615, 13644184, 17055230, 34110460, 68220920]

約数ペア:

[(1, 68220920), (2, 34110460), (4, 17055230), (5, 13644184), (8, 8527615), (10, 6822092), (20, 3411046), (40, 1705523), (109, 625880), (218, 312940), (436, 156470), (545, 125176), (872, 78235), (1090, 62588), (2180, 31294), (4360, 15647)]