21405435

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{199}}^1$

素因数の和:379

約数の個数: 32

約数和(自身を含む): 35251200

約数和(自身を除く): 13845765

約数列:

[1, 3, 5, 15, 71, 101, 199, 213, 303, 355, 505, 597, 995, 1065, 1515, 2985, 7171, 14129, 20099, 21513, 35855, 42387, 60297, 70645, 100495, 107565, 211935, 301485, 1427029, 4281087, 7135145, 21405435]

約数ペア:

[(1, 21405435), (3, 7135145), (5, 4281087), (15, 1427029), (71, 301485), (101, 211935), (199, 107565), (213, 100495), (303, 70645), (355, 60297), (505, 42387), (597, 35855), (995, 21513), (1065, 20099), (1515, 14129), (2985, 7171)]