81581120

素因数分解:

$2^6\times 5^1\times {\mathrm{254941}}^1$

素因数の和:254958

約数の個数: 28

約数和(自身を含む): 194265804

約数和(自身を除く): 112684684

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 254941, 509882, 1019764, 1274705, 2039528, 2549410, 4079056, 5098820, 8158112, 10197640, 16316224, 20395280, 40790560, 81581120]

約数ペア:

[(1, 81581120), (2, 40790560), (4, 20395280), (5, 16316224), (8, 10197640), (10, 8158112), (16, 5098820), (20, 4079056), (32, 2549410), (40, 2039528), (64, 1274705), (80, 1019764), (160, 509882), (320, 254941)]