80428900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{42331}}^1$

素因数の和:42364

約数の個数: 36

約数和(自身を含む): 183720880

約数和(自身を除く): 103291980

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 380, 475, 950, 1900, 42331, 84662, 169324, 211655, 423310, 804289, 846620, 1058275, 1608578, 2116550, 3217156, 4021445, 4233100, 8042890, 16085780, 20107225, 40214450, 80428900]

約数ペア:

[(1, 80428900), (2, 40214450), (4, 20107225), (5, 16085780), (10, 8042890), (19, 4233100), (20, 4021445), (25, 3217156), (38, 2116550), (50, 1608578), (76, 1058275), (95, 846620), (100, 804289), (190, 423310), (380, 211655), (475, 169324), (950, 84662), (1900, 42331)]