21778547

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{929}}^1$

素因数の和:1150

約数の個数: 16

約数和(自身を含む): 26516160

約数和(自身を除く): 4737613

約数列:

[1, 7, 17, 119, 197, 929, 1379, 3349, 6503, 15793, 23443, 110551, 183013, 1281091, 3111221, 21778547]

約数ペア:

[(1, 21778547), (7, 3111221), (17, 1281091), (119, 183013), (197, 110551), (929, 23443), (1379, 15793), (3349, 6503)]