31380880

素因数分解:

$2^4\times 5^1\times {\mathrm{392261}}^1$

素因数の和:392274

約数の個数: 20

約数和(自身を含む): 72960732

約数和(自身を除く): 41579852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 392261, 784522, 1569044, 1961305, 3138088, 3922610, 6276176, 7845220, 15690440, 31380880]

約数ペア:

[(1, 31380880), (2, 15690440), (4, 7845220), (5, 6276176), (8, 3922610), (10, 3138088), (16, 1961305), (20, 1569044), (40, 784522), (80, 392261)]