398400639

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{19991}}^1$

素因数の和:20087

約数の個数: 32

約数和(自身を含む): 662774784

約数和(自身を除く): 264374145

約数列:

[1, 3, 7, 13, 21, 39, 73, 91, 219, 273, 511, 949, 1533, 2847, 6643, 19929, 19991, 59973, 139937, 259883, 419811, 779649, 1459343, 1819181, 4378029, 5457543, 10215401, 18971459, 30646203, 56914377, 132800213, 398400639]

約数ペア:

[(1, 398400639), (3, 132800213), (7, 56914377), (13, 30646203), (21, 18971459), (39, 10215401), (73, 5457543), (91, 4378029), (219, 1819181), (273, 1459343), (511, 779649), (949, 419811), (1533, 259883), (2847, 139937), (6643, 59973), (19929, 19991)]