20720152

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:176

約数の個数: 64

約数和(自身を含む): 43084800

約数和(自身を除く): 22364648

約数列:

[1, 2, 4, 8, 29, 31, 43, 58, 62, 67, 86, 116, 124, 134, 172, 232, 248, 268, 344, 536, 899, 1247, 1333, 1798, 1943, 2077, 2494, 2666, 2881, 3596, 3886, 4154, 4988, 5332, 5762, 7192, 7772, 8308, 9976, 10664, 11524, 15544, 16616, 23048, 38657, 60233, 77314, 83549, 89311, 120466, 154628, 167098, 178622, 240932, 309256, 334196, 357244, 481864, 668392, 714488, 2590019, 5180038, 10360076, 20720152]

約数ペア:

[(1, 20720152), (2, 10360076), (4, 5180038), (8, 2590019), (29, 714488), (31, 668392), (43, 481864), (58, 357244), (62, 334196), (67, 309256), (86, 240932), (116, 178622), (124, 167098), (134, 154628), (172, 120466), (232, 89311), (248, 83549), (268, 77314), (344, 60233), (536, 38657), (899, 23048), (1247, 16616), (1333, 15544), (1798, 11524), (1943, 10664), (2077, 9976), (2494, 8308), (2666, 7772), (2881, 7192), (3596, 5762), (3886, 5332), (4154, 4988)]