1420880

素因数分解:

$2^4\times 5^1\times {\mathrm{17761}}^1$

素因数の和:17774

約数の個数: 20

約数和(自身を含む): 3303732

約数和(自身を除く): 1882852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 17761, 35522, 71044, 88805, 142088, 177610, 284176, 355220, 710440, 1420880]

約数ペア:

[(1, 1420880), (2, 710440), (4, 355220), (5, 284176), (8, 177610), (10, 142088), (16, 88805), (20, 71044), (40, 35522), (80, 17761)]