20398959

素因数分解:

$3^4\times 7^1\times {\mathrm{35977}}^1$

素因数の和:35996

約数の個数: 20

約数和(自身を含む): 34826704

約数和(自身を除く): 14427745

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 35977, 107931, 251839, 323793, 755517, 971379, 2266551, 2914137, 6799653, 20398959]

約数ペア:

[(1, 20398959), (3, 6799653), (7, 2914137), (9, 2266551), (21, 971379), (27, 755517), (63, 323793), (81, 251839), (189, 107931), (567, 35977)]