18273820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{2531}}^1$

素因数の和:2578

約数の個数: 36

約数和(自身を含む): 40517064

約数和(自身を除く): 22243244

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 2531, 3610, 5062, 7220, 10124, 12655, 25310, 48089, 50620, 96178, 192356, 240445, 480890, 913691, 961780, 1827382, 3654764, 4568455, 9136910, 18273820]

約数ペア:

[(1, 18273820), (2, 9136910), (4, 4568455), (5, 3654764), (10, 1827382), (19, 961780), (20, 913691), (38, 480890), (76, 240445), (95, 192356), (190, 96178), (361, 50620), (380, 48089), (722, 25310), (1444, 12655), (1805, 10124), (2531, 7220), (3610, 5062)]