28138565

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61843}}^1$

素因数の和:61868

約数の個数: 16

約数和(自身を含む): 41559168

約数和(自身を除く): 13420603

約数列:

[1, 5, 7, 13, 35, 65, 91, 455, 61843, 309215, 432901, 803959, 2164505, 4019795, 5627713, 28138565]

約数ペア:

[(1, 28138565), (5, 5627713), (7, 4019795), (13, 2164505), (35, 803959), (65, 432901), (91, 309215), (455, 61843)]