21219777

素因数分解:

$3^2\times {\mathrm{23}}^2\times {\mathrm{4457}}^1$

素因数の和:4509

約数の個数: 18

約数和(自身を含む): 32048562

約数和(自身を除く): 10828785

約数列:

[1, 3, 9, 23, 69, 207, 529, 1587, 4457, 4761, 13371, 40113, 102511, 307533, 922599, 2357753, 7073259, 21219777]

約数ペア:

[(1, 21219777), (3, 7073259), (9, 2357753), (23, 922599), (69, 307533), (207, 102511), (529, 40113), (1587, 13371), (4457, 4761)]