28101801

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{1303}}^1$

素因数の和:1405

約数の個数: 32

約数和(自身を含む): 46735360

約数和(自身を除く): 18633559

約数列:

[1, 3, 7, 13, 21, 39, 79, 91, 237, 273, 553, 1027, 1303, 1659, 3081, 3909, 7189, 9121, 16939, 21567, 27363, 50817, 102937, 118573, 308811, 355719, 720559, 1338181, 2161677, 4014543, 9367267, 28101801]

約数ペア:

[(1, 28101801), (3, 9367267), (7, 4014543), (13, 2161677), (21, 1338181), (39, 720559), (79, 355719), (91, 308811), (237, 118573), (273, 102937), (553, 50817), (1027, 27363), (1303, 21567), (1659, 16939), (3081, 9121), (3909, 7189)]