28403991

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2411}}^1$

素因数の和:2452

約数の個数: 48

約数和(自身を含む): 54183168

約数和(自身を除く): 25779177

約数列:

[1, 3, 7, 9, 11, 17, 21, 33, 51, 63, 77, 99, 119, 153, 187, 231, 357, 561, 693, 1071, 1309, 1683, 2411, 3927, 7233, 11781, 16877, 21699, 26521, 40987, 50631, 79563, 122961, 151893, 185647, 238689, 286909, 368883, 450857, 556941, 860727, 1352571, 1670823, 2582181, 3155999, 4057713, 9467997, 28403991]

約数ペア:

[(1, 28403991), (3, 9467997), (7, 4057713), (9, 3155999), (11, 2582181), (17, 1670823), (21, 1352571), (33, 860727), (51, 556941), (63, 450857), (77, 368883), (99, 286909), (119, 238689), (153, 185647), (187, 151893), (231, 122961), (357, 79563), (561, 50631), (693, 40987), (1071, 26521), (1309, 21699), (1683, 16877), (2411, 11781), (3927, 7233)]