31331120

素因数分解:

$2^4\times 5^1\times {\mathrm{391639}}^1$

素因数の和:391652

約数の個数: 20

約数和(自身を含む): 72845040

約数和(自身を除く): 41513920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 391639, 783278, 1566556, 1958195, 3133112, 3916390, 6266224, 7832780, 15665560, 31331120]

約数ペア:

[(1, 31331120), (2, 15665560), (4, 7832780), (5, 6266224), (8, 3916390), (10, 3133112), (16, 1958195), (20, 1566556), (40, 783278), (80, 391639)]