21138495

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{8753}}^1$

素因数の和:8791

約数の個数: 32

約数和(自身を含む): 40338432

約数和(自身を除く): 19199937

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 69, 105, 115, 161, 345, 483, 805, 2415, 8753, 26259, 43765, 61271, 131295, 183813, 201319, 306355, 603957, 919065, 1006595, 1409233, 3019785, 4227699, 7046165, 21138495]

約数ペア:

[(1, 21138495), (3, 7046165), (5, 4227699), (7, 3019785), (15, 1409233), (21, 1006595), (23, 919065), (35, 603957), (69, 306355), (105, 201319), (115, 183813), (161, 131295), (345, 61271), (483, 43765), (805, 26259), (2415, 8753)]