21011915

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{179}}^1\times {\mathrm{1381}}^1$

素因数の和:1582

約数の個数: 16

約数和(自身を含む): 26866080

約数和(自身を除く): 5854165

約数列:

[1, 5, 17, 85, 179, 895, 1381, 3043, 6905, 15215, 23477, 117385, 247199, 1235995, 4202383, 21011915]

約数ペア:

[(1, 21011915), (5, 4202383), (17, 1235995), (85, 247199), (179, 117385), (895, 23477), (1381, 15215), (3043, 6905)]