21958371

素因数分解:

$3^4\times {\mathrm{173}}^1\times {\mathrm{1567}}^1$

素因数の和:1752

約数の個数: 20

約数和(自身を含む): 33012672

約数和(自身を除く): 11054301

約数列:

[1, 3, 9, 27, 81, 173, 519, 1557, 1567, 4671, 4701, 14013, 14103, 42309, 126927, 271091, 813273, 2439819, 7319457, 21958371]

約数ペア:

[(1, 21958371), (3, 7319457), (9, 2439819), (27, 813273), (81, 271091), (173, 126927), (519, 42309), (1557, 14103), (1567, 14013), (4671, 4701)]