18380995

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1$

素因数の和:219

約数の個数: 32

約数和(自身を含む): 24634368

約数和(自身を除く): 6253373

約数列:

[1, 5, 17, 43, 47, 85, 107, 215, 235, 535, 731, 799, 1819, 2021, 3655, 3995, 4601, 5029, 9095, 10105, 23005, 25145, 34357, 78217, 85493, 171785, 216247, 391085, 427465, 1081235, 3676199, 18380995]

約数ペア:

[(1, 18380995), (5, 3676199), (17, 1081235), (43, 427465), (47, 391085), (85, 216247), (107, 171785), (215, 85493), (235, 78217), (535, 34357), (731, 25145), (799, 23005), (1819, 10105), (2021, 9095), (3655, 5029), (3995, 4601)]