18867872

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{197}}^1$

素因数の和:321

約数の個数: 48

約数和(自身を含む): 38769192

約数和(自身を除く): 19901320

約数列:

[1, 2, 4, 8, 16, 32, 41, 73, 82, 146, 164, 197, 292, 328, 394, 584, 656, 788, 1168, 1312, 1576, 2336, 2993, 3152, 5986, 6304, 8077, 11972, 14381, 16154, 23944, 28762, 32308, 47888, 57524, 64616, 95776, 115048, 129232, 230096, 258464, 460192, 589621, 1179242, 2358484, 4716968, 9433936, 18867872]

約数ペア:

[(1, 18867872), (2, 9433936), (4, 4716968), (8, 2358484), (16, 1179242), (32, 589621), (41, 460192), (73, 258464), (82, 230096), (146, 129232), (164, 115048), (197, 95776), (292, 64616), (328, 57524), (394, 47888), (584, 32308), (656, 28762), (788, 23944), (1168, 16154), (1312, 14381), (1576, 11972), (2336, 8077), (2993, 6304), (3152, 5986)]