991420

素因数分解:

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

素因数の和:2637

約数の個数: 24

約数和(自身を含む): 2192400

約数和(自身を除く): 1200980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 2609, 5218, 10436, 13045, 26090, 49571, 52180, 99142, 198284, 247855, 495710, 991420]

約数ペア:

[(1, 991420), (2, 495710), (4, 247855), (5, 198284), (10, 99142), (19, 52180), (20, 49571), (38, 26090), (76, 13045), (95, 10436), (190, 5218), (380, 2609)]