220116920

素因数分解:

$2^3\times 5^1\times {\mathrm{401}}^1\times {\mathrm{13723}}^1$

素因数の和:14135

約数の個数: 32

約数和(自身を含む): 496534320

約数和(自身を除く): 276417400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 401, 802, 1604, 2005, 3208, 4010, 8020, 13723, 16040, 27446, 54892, 68615, 109784, 137230, 274460, 548920, 5502923, 11005846, 22011692, 27514615, 44023384, 55029230, 110058460, 220116920]

約数ペア:

[(1, 220116920), (2, 110058460), (4, 55029230), (5, 44023384), (8, 27514615), (10, 22011692), (20, 11005846), (40, 5502923), (401, 548920), (802, 274460), (1604, 137230), (2005, 109784), (3208, 68615), (4010, 54892), (8020, 27446), (13723, 16040)]