645545984

素因数分解:

$2^{14}\times {\mathrm{31}}^2\times {\mathrm{41}}^1$

素因数の和:131

約数の個数: 90

約数和(自身を含む): 1366580502

約数和(自身を除く): 721034518

約数列:

[1, 2, 4, 8, 16, 31, 32, 41, 62, 64, 82, 124, 128, 164, 248, 256, 328, 496, 512, 656, 961, 992, 1024, 1271, 1312, 1922, 1984, 2048, 2542, 2624, 3844, 3968, 4096, 5084, 5248, 7688, 7936, 8192, 10168, 10496, 15376, 15872, 16384, 20336, 20992, 30752, 31744, 39401, 40672, 41984, 61504, 63488, 78802, 81344, 83968, 123008, 126976, 157604, 162688, 167936, 246016, 253952, 315208, 325376, 335872, 492032, 507904, 630416, 650752, 671744, 984064, 1260832, 1301504, 1968128, 2521664, 2603008, 3936256, 5043328, 5206016, 7872512, 10086656, 10412032, 15745024, 20173312, 20824064, 40346624, 80693248, 161386496, 322772992, 645545984]

約数ペア:

[(1, 645545984), (2, 322772992), (4, 161386496), (8, 80693248), (16, 40346624), (31, 20824064), (32, 20173312), (41, 15745024), (62, 10412032), (64, 10086656), (82, 7872512), (124, 5206016), (128, 5043328), (164, 3936256), (248, 2603008), (256, 2521664), (328, 1968128), (496, 1301504), (512, 1260832), (656, 984064), (961, 671744), (992, 650752), (1024, 630416), (1271, 507904), (1312, 492032), (1922, 335872), (1984, 325376), (2048, 315208), (2542, 253952), (2624, 246016), (3844, 167936), (3968, 162688), (4096, 157604), (5084, 126976), (5248, 123008), (7688, 83968), (7936, 81344), (8192, 78802), (10168, 63488), (10496, 61504), (15376, 41984), (15872, 40672), (16384, 39401), (20336, 31744), (20992, 30752)]