21087770

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{191707}}^1$

素因数の和:191725

約数の個数: 16

約数和(自身を含む): 41408928

約数和(自身を除く): 20321158

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 191707, 383414, 958535, 1917070, 2108777, 4217554, 10543885, 21087770]

約数ペア:

[(1, 21087770), (2, 10543885), (5, 4217554), (10, 2108777), (11, 1917070), (22, 958535), (55, 383414), (110, 191707)]