18816920

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{10009}}^1$

素因数の和:10067

約数の個数: 32

約数和(自身を含む): 43243200

約数和(自身を除く): 24426280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 10009, 20018, 40036, 50045, 80072, 100090, 200180, 400360, 470423, 940846, 1881692, 2352115, 3763384, 4704230, 9408460, 18816920]

約数ペア:

[(1, 18816920), (2, 9408460), (4, 4704230), (5, 3763384), (8, 2352115), (10, 1881692), (20, 940846), (40, 470423), (47, 400360), (94, 200180), (188, 100090), (235, 80072), (376, 50045), (470, 40036), (940, 20018), (1880, 10009)]