20647510120

素因数分解:

$2^3\times 5^1\times {\mathrm{617}}^1\times {\mathrm{836609}}^1$

素因数の和:837237

約数の個数: 32

約数和(自身を含む): 46532248200

約数和(自身を除く): 25884738080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 617, 1234, 2468, 3085, 4936, 6170, 12340, 24680, 836609, 1673218, 3346436, 4183045, 6692872, 8366090, 16732180, 33464360, 516187753, 1032375506, 2064751012, 2580938765, 4129502024, 5161877530, 10323755060, 20647510120]

約数ペア:

[(1, 20647510120), (2, 10323755060), (4, 5161877530), (5, 4129502024), (8, 2580938765), (10, 2064751012), (20, 1032375506), (40, 516187753), (617, 33464360), (1234, 16732180), (2468, 8366090), (3085, 6692872), (4936, 4183045), (6170, 3346436), (12340, 1673218), (24680, 836609)]