18216820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47939}}^1$

素因数の和:47967

約数の個数: 24

約数和(自身を含む): 40269600

約数和(自身を除く): 22052780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 47939, 95878, 191756, 239695, 479390, 910841, 958780, 1821682, 3643364, 4554205, 9108410, 18216820]

約数ペア:

[(1, 18216820), (2, 9108410), (4, 4554205), (5, 3643364), (10, 1821682), (19, 958780), (20, 910841), (38, 479390), (76, 239695), (95, 191756), (190, 95878), (380, 47939)]