31687280

素因数分解:

$2^4\times 5^1\times {\mathrm{396091}}^1$

素因数の和:396104

約数の個数: 20

約数和(自身を含む): 73673112

約数和(自身を除く): 41985832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 396091, 792182, 1584364, 1980455, 3168728, 3960910, 6337456, 7921820, 15843640, 31687280]

約数ペア:

[(1, 31687280), (2, 15843640), (4, 7921820), (5, 6337456), (8, 3960910), (10, 3168728), (16, 1980455), (20, 1584364), (40, 792182), (80, 396091)]