21353265

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15307}}^1$

素因数の和:15349

約数の個数: 24

約数和(自身を含む): 38208768

約数和(自身を除く): 16855503

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 155, 279, 465, 1395, 15307, 45921, 76535, 137763, 229605, 474517, 688815, 1423551, 2372585, 4270653, 7117755, 21353265]

約数ペア:

[(1, 21353265), (3, 7117755), (5, 4270653), (9, 2372585), (15, 1423551), (31, 688815), (45, 474517), (93, 229605), (155, 137763), (279, 76535), (465, 45921), (1395, 15307)]