21491778

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{4229}}^1$

素因数の和:4263

約数の個数: 48

約数和(自身を含む): 54008640

約数和(自身を除く): 32516862

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, 4229, 5082, 8458, 12687, 25374, 29603, 46519, 59206, 88809, 93038, 139557, 177618, 279114, 325633, 511709, 651266, 976899, 1023418, 1535127, 1953798, 3070254, 3581963, 7163926, 10745889, 21491778]

約数ペア:

[(1, 21491778), (2, 10745889), (3, 7163926), (6, 3581963), (7, 3070254), (11, 1953798), (14, 1535127), (21, 1023418), (22, 976899), (33, 651266), (42, 511709), (66, 325633), (77, 279114), (121, 177618), (154, 139557), (231, 93038), (242, 88809), (363, 59206), (462, 46519), (726, 29603), (847, 25374), (1694, 12687), (2541, 8458), (4229, 5082)]