217445907

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1\times {\mathrm{853}}^1$

素因数の和:1123

約数の個数: 32

約数和(自身を含む): 338867200

約数和(自身を除く): 121421293

約数列:

[1, 3, 7, 21, 61, 183, 199, 427, 597, 853, 1281, 1393, 2559, 4179, 5971, 12139, 17913, 36417, 52033, 84973, 156099, 169747, 254919, 364231, 509241, 1092693, 1188229, 3564687, 10354567, 31063701, 72481969, 217445907]

約数ペア:

[(1, 217445907), (3, 72481969), (7, 31063701), (21, 10354567), (61, 3564687), (183, 1188229), (199, 1092693), (427, 509241), (597, 364231), (853, 254919), (1281, 169747), (1393, 156099), (2559, 84973), (4179, 52033), (5971, 36417), (12139, 17913)]