20456315

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{157}}^1$

素因数の和:299

約数の個数: 32

約数和(自身を含む): 28394496

約数和(自身を除く): 7938181

約数列:

[1, 5, 11, 23, 55, 103, 115, 157, 253, 515, 785, 1133, 1265, 1727, 2369, 3611, 5665, 8635, 11845, 16171, 18055, 26059, 39721, 80855, 130295, 177881, 198605, 371933, 889405, 1859665, 4091263, 20456315]

約数ペア:

[(1, 20456315), (5, 4091263), (11, 1859665), (23, 889405), (55, 371933), (103, 198605), (115, 177881), (157, 130295), (253, 80855), (515, 39721), (785, 26059), (1133, 18055), (1265, 16171), (1727, 11845), (2369, 8635), (3611, 5665)]