80741480

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{6449}}^1$

素因数の和:6773

約数の個数: 32

約数和(自身を含む): 182277000

約数和(自身を除く): 101535520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1252, 1565, 2504, 3130, 6260, 6449, 12520, 12898, 25796, 32245, 51592, 64490, 128980, 257960, 2018537, 4037074, 8074148, 10092685, 16148296, 20185370, 40370740, 80741480]

約数ペア:

[(1, 80741480), (2, 40370740), (4, 20185370), (5, 16148296), (8, 10092685), (10, 8074148), (20, 4037074), (40, 2018537), (313, 257960), (626, 128980), (1252, 64490), (1565, 51592), (2504, 32245), (3130, 25796), (6260, 12898), (6449, 12520)]