28291315

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{25603}}^1$

素因数の和:25638

約数の個数: 16

約数和(自身を含む): 38713248

約数和(自身を除く): 10421933

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 25603, 128015, 332839, 435251, 1664195, 2176255, 5658263, 28291315]

約数ペア:

[(1, 28291315), (5, 5658263), (13, 2176255), (17, 1664195), (65, 435251), (85, 332839), (221, 128015), (1105, 25603)]