20690224

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:158

約数の個数: 80

約数和(自身を含む): 45666720

約数和(自身を除く): 24976496

約数列:

[1, 2, 4, 8, 16, 17, 29, 34, 43, 58, 61, 68, 86, 116, 122, 136, 172, 232, 244, 272, 344, 464, 488, 493, 688, 731, 976, 986, 1037, 1247, 1462, 1769, 1972, 2074, 2494, 2623, 2924, 3538, 3944, 4148, 4988, 5246, 5848, 7076, 7888, 8296, 9976, 10492, 11696, 14152, 16592, 19952, 20984, 21199, 28304, 30073, 41968, 42398, 44591, 60146, 76067, 84796, 89182, 120292, 152134, 169592, 178364, 240584, 304268, 339184, 356728, 481168, 608536, 713456, 1217072, 1293139, 2586278, 5172556, 10345112, 20690224]

約数ペア:

[(1, 20690224), (2, 10345112), (4, 5172556), (8, 2586278), (16, 1293139), (17, 1217072), (29, 713456), (34, 608536), (43, 481168), (58, 356728), (61, 339184), (68, 304268), (86, 240584), (116, 178364), (122, 169592), (136, 152134), (172, 120292), (232, 89182), (244, 84796), (272, 76067), (344, 60146), (464, 44591), (488, 42398), (493, 41968), (688, 30073), (731, 28304), (976, 21199), (986, 20984), (1037, 19952), (1247, 16592), (1462, 14152), (1769, 11696), (1972, 10492), (2074, 9976), (2494, 8296), (2623, 7888), (2924, 7076), (3538, 5848), (3944, 5246), (4148, 4988)]