18019220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47419}}^1$

素因数の和:47447

約数の個数: 24

約数和(自身を含む): 39832800

約数和(自身を除く): 21813580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 47419, 94838, 189676, 237095, 474190, 900961, 948380, 1801922, 3603844, 4504805, 9009610, 18019220]

約数ペア:

[(1, 18019220), (2, 9009610), (4, 4504805), (5, 3603844), (10, 1801922), (19, 948380), (20, 900961), (38, 474190), (76, 237095), (95, 189676), (190, 94838), (380, 47419)]