20051560

素因数分解:

$2^3\times 5^1\times {\mathrm{569}}^1\times {\mathrm{881}}^1$

素因数の和:1461

約数の個数: 32

約数和(自身を含む): 45246600

約数和(自身を除く): 25195040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 569, 881, 1138, 1762, 2276, 2845, 3524, 4405, 4552, 5690, 7048, 8810, 11380, 17620, 22760, 35240, 501289, 1002578, 2005156, 2506445, 4010312, 5012890, 10025780, 20051560]

約数ペア:

[(1, 20051560), (2, 10025780), (4, 5012890), (5, 4010312), (8, 2506445), (10, 2005156), (20, 1002578), (40, 501289), (569, 35240), (881, 22760), (1138, 17620), (1762, 11380), (2276, 8810), (2845, 7048), (3524, 5690), (4405, 4552)]