21301736

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{140143}}^1$

素因数の和:140168

約数の個数: 16

約数和(自身を含む): 42043200

約数和(自身を除く): 20741464

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 140143, 280286, 560572, 1121144, 2662717, 5325434, 10650868, 21301736]

約数ペア:

[(1, 21301736), (2, 10650868), (4, 5325434), (8, 2662717), (19, 1121144), (38, 560572), (76, 280286), (152, 140143)]