21828280

素因数分解:

$2^3\times 5^1\times {\mathrm{229}}^1\times {\mathrm{2383}}^1$

素因数の和:2623

約数の個数: 32

約数和(自身を含む): 49348800

約数和(自身を除く): 27520520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 229, 458, 916, 1145, 1832, 2290, 2383, 4580, 4766, 9160, 9532, 11915, 19064, 23830, 47660, 95320, 545707, 1091414, 2182828, 2728535, 4365656, 5457070, 10914140, 21828280]

約数ペア:

[(1, 21828280), (2, 10914140), (4, 5457070), (5, 4365656), (8, 2728535), (10, 2182828), (20, 1091414), (40, 545707), (229, 95320), (458, 47660), (916, 23830), (1145, 19064), (1832, 11915), (2290, 9532), (2383, 9160), (4580, 4766)]