18978584

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{33413}}^1$

素因数の和:33490

約数の個数: 16

約数和(自身を含む): 36087120

約数和(自身を除く): 17108536

約数列:

[1, 2, 4, 8, 71, 142, 284, 568, 33413, 66826, 133652, 267304, 2372323, 4744646, 9489292, 18978584]

約数ペア:

[(1, 18978584), (2, 9489292), (4, 4744646), (8, 2372323), (71, 267304), (142, 133652), (284, 66826), (568, 33413)]