21087286

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{22291}}^1$

素因数の和:22347

約数の個数: 16

約数和(自身を含む): 35310528

約数和(自身を除く): 14223242

約数列:

[1, 2, 11, 22, 43, 86, 473, 946, 22291, 44582, 245201, 490402, 958513, 1917026, 10543643, 21087286]

約数ペア:

[(1, 21087286), (2, 10543643), (11, 1917026), (22, 958513), (43, 490402), (86, 245201), (473, 44582), (946, 22291)]