31233520

素因数分解:

$2^4\times 5^1\times {\mathrm{390419}}^1$

素因数の和:390432

約数の個数: 20

約数和(自身を含む): 72618120

約数和(自身を除く): 41384600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 390419, 780838, 1561676, 1952095, 3123352, 3904190, 6246704, 7808380, 15616760, 31233520]

約数ペア:

[(1, 31233520), (2, 15616760), (4, 7808380), (5, 6246704), (8, 3904190), (10, 3123352), (16, 1952095), (20, 1561676), (40, 780838), (80, 390419)]