21073129

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{163}}^1$

素因数の和:277

約数の個数: 32

約数和(自身を含む): 27961344

約数和(自身を除く): 6888215

約数列:

[1, 7, 11, 23, 73, 77, 161, 163, 253, 511, 803, 1141, 1679, 1771, 1793, 3749, 5621, 11753, 11899, 12551, 18469, 26243, 41239, 83293, 129283, 130889, 273677, 288673, 916223, 1915739, 3010447, 21073129]

約数ペア:

[(1, 21073129), (7, 3010447), (11, 1915739), (23, 916223), (73, 288673), (77, 273677), (161, 130889), (163, 129283), (253, 83293), (511, 41239), (803, 26243), (1141, 18469), (1679, 12551), (1771, 11899), (1793, 11753), (3749, 5621)]