21656133

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{811}}^1$

素因数の和:886

約数の個数: 32

約数和(自身を含む): 34298880

約数和(自身を除く): 12642747

約数列:

[1, 3, 9, 23, 27, 43, 69, 129, 207, 387, 621, 811, 989, 1161, 2433, 2967, 7299, 8901, 18653, 21897, 26703, 34873, 55959, 104619, 167877, 313857, 503631, 802079, 941571, 2406237, 7218711, 21656133]

約数ペア:

[(1, 21656133), (3, 7218711), (9, 2406237), (23, 941571), (27, 802079), (43, 503631), (69, 313857), (129, 167877), (207, 104619), (387, 55959), (621, 34873), (811, 26703), (989, 21897), (1161, 18653), (2433, 8901), (2967, 7299)]