218520921

素因数分解:

$3^1\times {\mathrm{97}}^1\times {\mathrm{157}}^1\times {\mathrm{4783}}^1$

素因数の和:5040

約数の個数: 16

約数和(自身を含む): 296301824

約数和(自身を除く): 77780903

約数列:

[1, 3, 97, 157, 291, 471, 4783, 14349, 15229, 45687, 463951, 750931, 1391853, 2252793, 72840307, 218520921]

約数ペア:

[(1, 218520921), (3, 72840307), (97, 2252793), (157, 1391853), (291, 750931), (471, 463951), (4783, 45687), (14349, 15229)]