280394751

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{19379}}^1$

素因数の和:19455

約数の個数: 32

約数和(自身を含む): 468840960

約数和(自身を除く): 188446209

約数列:

[1, 3, 7, 13, 21, 39, 53, 91, 159, 273, 371, 689, 1113, 2067, 4823, 14469, 19379, 58137, 135653, 251927, 406959, 755781, 1027087, 1763489, 3081261, 5290467, 7189609, 13352131, 21568827, 40056393, 93464917, 280394751]

約数ペア:

[(1, 280394751), (3, 93464917), (7, 40056393), (13, 21568827), (21, 13352131), (39, 7189609), (53, 5290467), (91, 3081261), (159, 1763489), (273, 1027087), (371, 755781), (689, 406959), (1113, 251927), (2067, 135653), (4823, 58137), (14469, 19379)]