28105960

素因数分解:

$2^3\times 5^1\times {\mathrm{421}}^1\times {\mathrm{1669}}^1$

素因数の和:2101

約数の個数: 32

約数和(自身を含む): 63426600

約数和(自身を除く): 35320640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421, 842, 1669, 1684, 2105, 3338, 3368, 4210, 6676, 8345, 8420, 13352, 16690, 16840, 33380, 66760, 702649, 1405298, 2810596, 3513245, 5621192, 7026490, 14052980, 28105960]

約数ペア:

[(1, 28105960), (2, 14052980), (4, 7026490), (5, 5621192), (8, 3513245), (10, 2810596), (20, 1405298), (40, 702649), (421, 66760), (842, 33380), (1669, 16840), (1684, 16690), (2105, 13352), (3338, 8420), (3368, 8345), (4210, 6676)]