20047240

素因数分解:

$2^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{2897}}^1$

素因数の和:3081

約数の個数: 32

約数和(自身を含む): 45382680

約数和(自身を除く): 25335440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 173, 346, 692, 865, 1384, 1730, 2897, 3460, 5794, 6920, 11588, 14485, 23176, 28970, 57940, 115880, 501181, 1002362, 2004724, 2505905, 4009448, 5011810, 10023620, 20047240]

約数ペア:

[(1, 20047240), (2, 10023620), (4, 5011810), (5, 4009448), (8, 2505905), (10, 2004724), (20, 1002362), (40, 501181), (173, 115880), (346, 57940), (692, 28970), (865, 23176), (1384, 14485), (1730, 11588), (2897, 6920), (3460, 5794)]