208508769

素因数分解:

$3^3\times 7^2\times {\mathrm{173}}^1\times {\mathrm{911}}^1$

素因数の和:1107

約数の個数: 48

約数和(自身を含む): 361808640

約数和(自身を除く): 153299871

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 173, 189, 441, 519, 911, 1211, 1323, 1557, 2733, 3633, 4671, 6377, 8199, 8477, 10899, 19131, 24597, 25431, 32697, 44639, 57393, 76293, 133917, 157603, 172179, 228879, 401751, 472809, 1103221, 1205253, 1418427, 3309663, 4255281, 7722547, 9928989, 23167641, 29786967, 69502923, 208508769]

約数ペア:

[(1, 208508769), (3, 69502923), (7, 29786967), (9, 23167641), (21, 9928989), (27, 7722547), (49, 4255281), (63, 3309663), (147, 1418427), (173, 1205253), (189, 1103221), (441, 472809), (519, 401751), (911, 228879), (1211, 172179), (1323, 157603), (1557, 133917), (2733, 76293), (3633, 57393), (4671, 44639), (6377, 32697), (8199, 25431), (8477, 24597), (10899, 19131)]