21267778

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{257}}^2$

素因数の和:546

約数の個数: 24

約数和(自身を含む): 38192832

約数和(自身を除く): 16925054

約数列:

[1, 2, 7, 14, 23, 46, 161, 257, 322, 514, 1799, 3598, 5911, 11822, 41377, 66049, 82754, 132098, 462343, 924686, 1519127, 3038254, 10633889, 21267778]

約数ペア:

[(1, 21267778), (2, 10633889), (7, 3038254), (14, 1519127), (23, 924686), (46, 462343), (161, 132098), (257, 82754), (322, 66049), (514, 41377), (1799, 11822), (3598, 5911)]