18836980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{2609}}^1$

素因数の和:2656

約数の個数: 36

約数和(自身を含む): 41765220

約数和(自身を除く): 22928240

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 2609, 3610, 5218, 7220, 10436, 13045, 26090, 49571, 52180, 99142, 198284, 247855, 495710, 941849, 991420, 1883698, 3767396, 4709245, 9418490, 18836980]

約数ペア:

[(1, 18836980), (2, 9418490), (4, 4709245), (5, 3767396), (10, 1883698), (19, 991420), (20, 941849), (38, 495710), (76, 247855), (95, 198284), (190, 99142), (361, 52180), (380, 49571), (722, 26090), (1444, 13045), (1805, 10436), (2609, 7220), (3610, 5218)]