21994780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{57881}}^1$

素因数の和:57909

約数の個数: 24

約数和(自身を含む): 48620880

約数和(自身を除く): 26626100

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 57881, 115762, 231524, 289405, 578810, 1099739, 1157620, 2199478, 4398956, 5498695, 10997390, 21994780]

約数ペア:

[(1, 21994780), (2, 10997390), (4, 5498695), (5, 4398956), (10, 2199478), (19, 1157620), (20, 1099739), (38, 578810), (76, 289405), (95, 231524), (190, 115762), (380, 57881)]