21123112

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{155317}}^1$

素因数の和:155340

約数の個数: 16

約数和(自身を含む): 41935860

約数和(自身を除く): 20812748

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 155317, 310634, 621268, 1242536, 2640389, 5280778, 10561556, 21123112]

約数ペア:

[(1, 21123112), (2, 10561556), (4, 5280778), (8, 2640389), (17, 1242536), (34, 621268), (68, 310634), (136, 155317)]