20216920

素因数分解:

$2^3\times 5^1\times {\mathrm{673}}^1\times {\mathrm{751}}^1$

素因数の和:1435

約数の個数: 32

約数和(自身を含む): 45616320

約数和(自身を除く): 25399400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 673, 751, 1346, 1502, 2692, 3004, 3365, 3755, 5384, 6008, 6730, 7510, 13460, 15020, 26920, 30040, 505423, 1010846, 2021692, 2527115, 4043384, 5054230, 10108460, 20216920]

約数ペア:

[(1, 20216920), (2, 10108460), (4, 5054230), (5, 4043384), (8, 2527115), (10, 2021692), (20, 1010846), (40, 505423), (673, 30040), (751, 26920), (1346, 15020), (1502, 13460), (2692, 7510), (3004, 6730), (3365, 6008), (3755, 5384)]