20373381

素因数分解:

$3^2\times 7^1\times {\mathrm{331}}^1\times {\mathrm{977}}^1$

素因数の和:1321

約数の個数: 24

約数和(自身を含む): 33768384

約数和(自身を除く): 13395003

約数列:

[1, 3, 7, 9, 21, 63, 331, 977, 993, 2317, 2931, 2979, 6839, 6951, 8793, 20517, 20853, 61551, 323387, 970161, 2263709, 2910483, 6791127, 20373381]

約数ペア:

[(1, 20373381), (3, 6791127), (7, 2910483), (9, 2263709), (21, 970161), (63, 323387), (331, 61551), (977, 20853), (993, 20517), (2317, 8793), (2931, 6951), (2979, 6839)]