208538463

素因数分解:

$3^1\times 7^2\times {\mathrm{149}}^1\times {\mathrm{9521}}^1$

素因数の和:9687

約数の個数: 24

約数和(自身を含む): 325652400

約数和(自身を除く): 117113937

約数列:

[1, 3, 7, 21, 49, 147, 149, 447, 1043, 3129, 7301, 9521, 21903, 28563, 66647, 199941, 466529, 1399587, 1418629, 4255887, 9930403, 29791209, 69512821, 208538463]

約数ペア:

[(1, 208538463), (3, 69512821), (7, 29791209), (21, 9930403), (49, 4255887), (147, 1418629), (149, 1399587), (447, 466529), (1043, 199941), (3129, 66647), (7301, 28563), (9521, 21903)]