21381410

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{4337}}^1$

素因数の和:4390

約数の個数: 32

約数和(自身を含む): 42165360

約数和(自身を除く): 20783950

約数列:

[1, 2, 5, 10, 17, 29, 34, 58, 85, 145, 170, 290, 493, 986, 2465, 4337, 4930, 8674, 21685, 43370, 73729, 125773, 147458, 251546, 368645, 628865, 737290, 1257730, 2138141, 4276282, 10690705, 21381410]

約数ペア:

[(1, 21381410), (2, 10690705), (5, 4276282), (10, 2138141), (17, 1257730), (29, 737290), (34, 628865), (58, 368645), (85, 251546), (145, 147458), (170, 125773), (290, 73729), (493, 43370), (986, 21685), (2465, 8674), (4337, 4930)]