21540592

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{239}}^1$

素因数の和:421

約数の個数: 40

約数和(自身を含む): 43211520

約数和(自身を除く): 21670928

約数列:

[1, 2, 4, 8, 16, 43, 86, 131, 172, 239, 262, 344, 478, 524, 688, 956, 1048, 1912, 2096, 3824, 5633, 10277, 11266, 20554, 22532, 31309, 41108, 45064, 62618, 82216, 90128, 125236, 164432, 250472, 500944, 1346287, 2692574, 5385148, 10770296, 21540592]

約数ペア:

[(1, 21540592), (2, 10770296), (4, 5385148), (8, 2692574), (16, 1346287), (43, 500944), (86, 250472), (131, 164432), (172, 125236), (239, 90128), (262, 82216), (344, 62618), (478, 45064), (524, 41108), (688, 31309), (956, 22532), (1048, 20554), (1912, 11266), (2096, 10277), (3824, 5633)]