72819640

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{42337}}^1$

素因数の和:42391

約数の個数: 32

約数和(自身を含む): 167658480

約数和(自身を除く): 94838840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 42337, 84674, 169348, 211685, 338696, 423370, 846740, 1693480, 1820491, 3640982, 7281964, 9102455, 14563928, 18204910, 36409820, 72819640]

約数ペア:

[(1, 72819640), (2, 36409820), (4, 18204910), (5, 14563928), (8, 9102455), (10, 7281964), (20, 3640982), (40, 1820491), (43, 1693480), (86, 846740), (172, 423370), (215, 338696), (344, 211685), (430, 169348), (860, 84674), (1720, 42337)]