81380481

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{971}}^1$

素因数の和:1301

約数の個数: 32

約数和(自身を含む): 134120448

約数和(自身を除く): 52739967

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 307, 921, 971, 2149, 2913, 3991, 6447, 6797, 11973, 12623, 20391, 27937, 37869, 83811, 88361, 265083, 298097, 894291, 2086679, 3875261, 6260037, 11625783, 27126827, 81380481]

約数ペア:

[(1, 81380481), (3, 27126827), (7, 11625783), (13, 6260037), (21, 3875261), (39, 2086679), (91, 894291), (273, 298097), (307, 265083), (921, 88361), (971, 83811), (2149, 37869), (2913, 27937), (3991, 20391), (6447, 12623), (6797, 11973)]