21981566168

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{4451}}^1\times {\mathrm{36313}}^1$

素因数の和:40787

約数の個数: 32

約数和(自身を含む): 43650880560

約数和(自身を除く): 21669314392

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 4451, 8902, 17804, 35608, 36313, 72626, 75667, 145252, 151334, 290504, 302668, 605336, 617321, 1234642, 2469284, 4938568, 161629163, 323258326, 646516652, 1293033304, 2747695771, 5495391542, 10990783084, 21981566168]

約数ペア:

[(1, 21981566168), (2, 10990783084), (4, 5495391542), (8, 2747695771), (17, 1293033304), (34, 646516652), (68, 323258326), (136, 161629163), (4451, 4938568), (8902, 2469284), (17804, 1234642), (35608, 617321), (36313, 605336), (72626, 302668), (75667, 290504), (145252, 151334)]