18890920

素因数分解:

$2^3\times 5^1\times {\mathrm{472273}}^1$

素因数の和:472284

約数の個数: 16

約数和(自身を含む): 42504660

約数和(自身を除く): 23613740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 472273, 944546, 1889092, 2361365, 3778184, 4722730, 9445460, 18890920]

約数ペア:

[(1, 18890920), (2, 9445460), (4, 4722730), (5, 3778184), (8, 2361365), (10, 1889092), (20, 944546), (40, 472273)]