21080465

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{19429}}^1$

素因数の和:19472

約数の個数: 16

約数和(自身を含む): 29844480

約数和(自身を除く): 8764015

約数列:

[1, 5, 7, 31, 35, 155, 217, 1085, 19429, 97145, 136003, 602299, 680015, 3011495, 4216093, 21080465]

約数ペア:

[(1, 21080465), (5, 4216093), (7, 3011495), (31, 680015), (35, 602299), (155, 136003), (217, 97145), (1085, 19429)]