31420880

素因数分解:

$2^4\times 5^1\times {\mathrm{392761}}^1$

素因数の和:392774

約数の個数: 20

約数和(自身を含む): 73053732

約数和(自身を除く): 41632852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 392761, 785522, 1571044, 1963805, 3142088, 3927610, 6284176, 7855220, 15710440, 31420880]

約数ペア:

[(1, 31420880), (2, 15710440), (4, 7855220), (5, 6284176), (8, 3927610), (10, 3142088), (16, 1963805), (20, 1571044), (40, 785522), (80, 392761)]