80990420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{578503}}^1$

素因数の和:578519

約数の個数: 24

約数和(自身を含む): 194377344

約数和(自身を除く): 113386924

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 578503, 1157006, 2314012, 2892515, 4049521, 5785030, 8099042, 11570060, 16198084, 20247605, 40495210, 80990420]

約数ペア:

[(1, 80990420), (2, 40495210), (4, 20247605), (5, 16198084), (7, 11570060), (10, 8099042), (14, 5785030), (20, 4049521), (28, 2892515), (35, 2314012), (70, 1157006), (140, 578503)]