21215932

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{16421}}^1$

素因数の和:16461

約数の個数: 24

約数和(自身を含む): 41383440

約数和(自身を除く): 20167508

約数列:

[1, 2, 4, 17, 19, 34, 38, 68, 76, 323, 646, 1292, 16421, 32842, 65684, 279157, 311999, 558314, 623998, 1116628, 1247996, 5303983, 10607966, 21215932]

約数ペア:

[(1, 21215932), (2, 10607966), (4, 5303983), (17, 1247996), (19, 1116628), (34, 623998), (38, 558314), (68, 311999), (76, 279157), (323, 65684), (646, 32842), (1292, 16421)]