21196695

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1531}}^1$

素因数の和:1623

約数の個数: 32

約数和(自身を含む): 37062144

約数和(自身を除く): 15865449

約数列:

[1, 3, 5, 13, 15, 39, 65, 71, 195, 213, 355, 923, 1065, 1531, 2769, 4593, 4615, 7655, 13845, 19903, 22965, 59709, 99515, 108701, 298545, 326103, 543505, 1413113, 1630515, 4239339, 7065565, 21196695]

約数ペア:

[(1, 21196695), (3, 7065565), (5, 4239339), (13, 1630515), (15, 1413113), (39, 543505), (65, 326103), (71, 298545), (195, 108701), (213, 99515), (355, 59709), (923, 22965), (1065, 19903), (1531, 13845), (2769, 7655), (4593, 4615)]