18528920

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{5581}}^1$

素因数の和:5675

約数の個数: 32

約数和(自身を含む): 42199920

約数和(自身を除く): 23671000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 5581, 11162, 22324, 27905, 44648, 55810, 111620, 223240, 463223, 926446, 1852892, 2316115, 3705784, 4632230, 9264460, 18528920]

約数ペア:

[(1, 18528920), (2, 9264460), (4, 4632230), (5, 3705784), (8, 2316115), (10, 1852892), (20, 926446), (40, 463223), (83, 223240), (166, 111620), (332, 55810), (415, 44648), (664, 27905), (830, 22324), (1660, 11162), (3320, 5581)]