215418815

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{281}}^1\times {\mathrm{311}}^1$

素因数の和:643

約数の個数: 32

約数和(自身を含む): 285068160

約数和(自身を除く): 69649345

約数列:

[1, 5, 17, 29, 85, 145, 281, 311, 493, 1405, 1555, 2465, 4777, 5287, 8149, 9019, 23885, 26435, 40745, 45095, 87391, 138533, 153323, 436955, 692665, 766615, 1485647, 2534339, 7428235, 12671695, 43083763, 215418815]

約数ペア:

[(1, 215418815), (5, 43083763), (17, 12671695), (29, 7428235), (85, 2534339), (145, 1485647), (281, 766615), (311, 692665), (493, 436955), (1405, 153323), (1555, 138533), (2465, 87391), (4777, 45095), (5287, 40745), (8149, 26435), (9019, 23885)]