31399120

素因数分解:

$2^4\times 5^1\times {\mathrm{392489}}^1$

素因数の和:392502

約数の個数: 20

約数和(自身を含む): 73003140

約数和(自身を除く): 41604020

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 392489, 784978, 1569956, 1962445, 3139912, 3924890, 6279824, 7849780, 15699560, 31399120]

約数ペア:

[(1, 31399120), (2, 15699560), (4, 7849780), (5, 6279824), (8, 3924890), (10, 3139912), (16, 1962445), (20, 1569956), (40, 784978), (80, 392489)]