71900420

素因数分解:

$2^2\times 5^1\times {\mathrm{1289}}^1\times {\mathrm{2789}}^1$

素因数の和:4087

約数の個数: 24

約数和(自身を含む): 151162200

約数和(自身を除く): 79261780

約数列:

[1, 2, 4, 5, 10, 20, 1289, 2578, 2789, 5156, 5578, 6445, 11156, 12890, 13945, 25780, 27890, 55780, 3595021, 7190042, 14380084, 17975105, 35950210, 71900420]

約数ペア:

[(1, 71900420), (2, 35950210), (4, 17975105), (5, 14380084), (10, 7190042), (20, 3595021), (1289, 55780), (2578, 27890), (2789, 25780), (5156, 13945), (5578, 12890), (6445, 11156)]