21276916

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{1201}}^1$

素因数の和:1351

約数の個数: 24

約数和(自身を含む): 38502464

約数和(自身を除く): 17225548

約数列:

[1, 2, 4, 43, 86, 103, 172, 206, 412, 1201, 2402, 4429, 4804, 8858, 17716, 51643, 103286, 123703, 206572, 247406, 494812, 5319229, 10638458, 21276916]

約数ペア:

[(1, 21276916), (2, 10638458), (4, 5319229), (43, 494812), (86, 247406), (103, 206572), (172, 123703), (206, 103286), (412, 51643), (1201, 17716), (2402, 8858), (4429, 4804)]