215422821

素因数分解:

$3^4\times {\mathrm{307}}^1\times {\mathrm{8663}}^1$

素因数の和:8982

約数の個数: 20

約数和(自身を含む): 322889952

約数和(自身を除く): 107467131

約数列:

[1, 3, 9, 27, 81, 307, 921, 2763, 8289, 8663, 24867, 25989, 77967, 233901, 701703, 2659541, 7978623, 23935869, 71807607, 215422821]

約数ペア:

[(1, 215422821), (3, 71807607), (9, 23935869), (27, 7978623), (81, 2659541), (307, 701703), (921, 233901), (2763, 77967), (8289, 25989), (8663, 24867)]