28680015

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{21011}}^1$

素因数の和:21039

約数の個数: 32

約数和(自身を含む): 56480256

約数和(自身を除く): 27800241

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 105, 195, 273, 455, 1365, 21011, 63033, 105055, 147077, 273143, 315165, 441231, 735385, 819429, 1365715, 1912001, 2206155, 4097145, 5736003, 9560005, 28680015]

約数ペア:

[(1, 28680015), (3, 9560005), (5, 5736003), (7, 4097145), (13, 2206155), (15, 1912001), (21, 1365715), (35, 819429), (39, 735385), (65, 441231), (91, 315165), (105, 273143), (195, 147077), (273, 105055), (455, 63033), (1365, 21011)]