129331420

素因数分解:

$2^2\times 5^1\times {\mathrm{1609}}^1\times {\mathrm{4019}}^1$

素因数の和:5637

約数の個数: 24

約数和(自身を含む): 271832400

約数和(自身を除く): 142500980

約数列:

[1, 2, 4, 5, 10, 20, 1609, 3218, 4019, 6436, 8038, 8045, 16076, 16090, 20095, 32180, 40190, 80380, 6466571, 12933142, 25866284, 32332855, 64665710, 129331420]

約数ペア:

[(1, 129331420), (2, 64665710), (4, 32332855), (5, 25866284), (10, 12933142), (20, 6466571), (1609, 80380), (3218, 40190), (4019, 32180), (6436, 20095), (8038, 16090), (8045, 16076)]