21531447

素因数分解:

$3^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{3079}}^1$

素因数の和:3132

約数の個数: 32

約数和(自身を含む): 37452800

約数和(自身を除く): 15921353

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 111, 189, 259, 333, 777, 999, 2331, 3079, 6993, 9237, 21553, 27711, 64659, 83133, 113923, 193977, 341769, 581931, 797461, 1025307, 2392383, 3075921, 7177149, 21531447]

約数ペア:

[(1, 21531447), (3, 7177149), (7, 3075921), (9, 2392383), (21, 1025307), (27, 797461), (37, 581931), (63, 341769), (111, 193977), (189, 113923), (259, 83133), (333, 64659), (777, 27711), (999, 21553), (2331, 9237), (3079, 6993)]