21221288

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{1009}}^1$

素因数の和:1265

約数の個数: 32

約数和(自身を含む): 43632000

約数和(自身を除く): 22410712

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 239, 478, 956, 1009, 1912, 2018, 2629, 4036, 5258, 8072, 10516, 11099, 21032, 22198, 44396, 88792, 241151, 482302, 964604, 1929208, 2652661, 5305322, 10610644, 21221288]

約数ペア:

[(1, 21221288), (2, 10610644), (4, 5305322), (8, 2652661), (11, 1929208), (22, 964604), (44, 482302), (88, 241151), (239, 88792), (478, 44396), (956, 22198), (1009, 21032), (1912, 11099), (2018, 10516), (2629, 8072), (4036, 5258)]