21393790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{4523}}^1$

素因数の和:4584

約数の個数: 32

約数和(自身を含む): 42996096

約数和(自身を除く): 21602306

約数列:

[1, 2, 5, 10, 11, 22, 43, 55, 86, 110, 215, 430, 473, 946, 2365, 4523, 4730, 9046, 22615, 45230, 49753, 99506, 194489, 248765, 388978, 497530, 972445, 1944890, 2139379, 4278758, 10696895, 21393790]

約数ペア:

[(1, 21393790), (2, 10696895), (5, 4278758), (10, 2139379), (11, 1944890), (22, 972445), (43, 497530), (55, 388978), (86, 248765), (110, 194489), (215, 99506), (430, 49753), (473, 45230), (946, 22615), (2365, 9046), (4523, 4730)]