21003906

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{4133}}^1$

素因数の和:4167

約数の個数: 48

約数和(自身を含む): 52782912

約数和(自身を除く): 31779006

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 66, 77, 121, 154, 231, 242, 363, 462, 726, 847, 1694, 2541, 4133, 5082, 8266, 12399, 24798, 28931, 45463, 57862, 86793, 90926, 136389, 173586, 272778, 318241, 500093, 636482, 954723, 1000186, 1500279, 1909446, 3000558, 3500651, 7001302, 10501953, 21003906]

約数ペア:

[(1, 21003906), (2, 10501953), (3, 7001302), (6, 3500651), (7, 3000558), (11, 1909446), (14, 1500279), (21, 1000186), (22, 954723), (33, 636482), (42, 500093), (66, 318241), (77, 272778), (121, 173586), (154, 136389), (231, 90926), (242, 86793), (363, 57862), (462, 45463), (726, 28931), (847, 24798), (1694, 12399), (2541, 8266), (4133, 5082)]