80479820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{211789}}^1$

素因数の和:211817

約数の個数: 24

約数和(自身を含む): 177903600

約数和(自身を除く): 97423780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 211789, 423578, 847156, 1058945, 2117890, 4023991, 4235780, 8047982, 16095964, 20119955, 40239910, 80479820]

約数ペア:

[(1, 80479820), (2, 40239910), (4, 20119955), (5, 16095964), (10, 8047982), (19, 4235780), (20, 4023991), (38, 2117890), (76, 1058945), (95, 847156), (190, 423578), (380, 211789)]