21516365

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{7043}}^1$

素因数の和:7108

約数の個数: 16

約数和(自身を含む): 28401408

約数和(自身を除く): 6885043

約数列:

[1, 5, 13, 47, 65, 235, 611, 3055, 7043, 35215, 91559, 331021, 457795, 1655105, 4303273, 21516365]

約数ペア:

[(1, 21516365), (5, 4303273), (13, 1655105), (47, 457795), (65, 331021), (235, 91559), (611, 35215), (3055, 7043)]