71985880

素因数分解:

$2^3\times 5^1\times {\mathrm{331}}^1\times {\mathrm{5437}}^1$

素因数の和:5779

約数の個数: 32

約数和(自身を含む): 162487440

約数和(自身を除く): 90501560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 331, 662, 1324, 1655, 2648, 3310, 5437, 6620, 10874, 13240, 21748, 27185, 43496, 54370, 108740, 217480, 1799647, 3599294, 7198588, 8998235, 14397176, 17996470, 35992940, 71985880]

約数ペア:

[(1, 71985880), (2, 35992940), (4, 17996470), (5, 14397176), (8, 8998235), (10, 7198588), (20, 3599294), (40, 1799647), (331, 217480), (662, 108740), (1324, 54370), (1655, 43496), (2648, 27185), (3310, 21748), (5437, 13240), (6620, 10874)]