645299968

素因数分解:

$2^8\times {\mathrm{31}}^2\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:182

約数の個数: 108

約数和(自身を含む): 1384249944

約数和(自身を除く): 738949976

約数列:

[1, 2, 4, 8, 16, 31, 32, 43, 61, 62, 64, 86, 122, 124, 128, 172, 244, 248, 256, 344, 488, 496, 688, 961, 976, 992, 1333, 1376, 1891, 1922, 1952, 1984, 2623, 2666, 2752, 3782, 3844, 3904, 3968, 5246, 5332, 5504, 7564, 7688, 7808, 7936, 10492, 10664, 11008, 15128, 15376, 15616, 20984, 21328, 30256, 30752, 41323, 41968, 42656, 58621, 60512, 61504, 81313, 82646, 83936, 85312, 117242, 121024, 123008, 162626, 165292, 167872, 170624, 234484, 242048, 246016, 325252, 330584, 335744, 341248, 468968, 484096, 650504, 661168, 671488, 937936, 1301008, 1322336, 1875872, 2520703, 2602016, 2644672, 3751744, 5041406, 5204032, 5289344, 7503488, 10082812, 10408064, 10578688, 15006976, 20165624, 20816128, 40331248, 80662496, 161324992, 322649984, 645299968]

約数ペア:

[(1, 645299968), (2, 322649984), (4, 161324992), (8, 80662496), (16, 40331248), (31, 20816128), (32, 20165624), (43, 15006976), (61, 10578688), (62, 10408064), (64, 10082812), (86, 7503488), (122, 5289344), (124, 5204032), (128, 5041406), (172, 3751744), (244, 2644672), (248, 2602016), (256, 2520703), (344, 1875872), (488, 1322336), (496, 1301008), (688, 937936), (961, 671488), (976, 661168), (992, 650504), (1333, 484096), (1376, 468968), (1891, 341248), (1922, 335744), (1952, 330584), (1984, 325252), (2623, 246016), (2666, 242048), (2752, 234484), (3782, 170624), (3844, 167872), (3904, 165292), (3968, 162626), (5246, 123008), (5332, 121024), (5504, 117242), (7564, 85312), (7688, 83936), (7808, 82646), (7936, 81313), (10492, 61504), (10664, 60512), (11008, 58621), (15128, 42656), (15376, 41968), (15616, 41323), (20984, 30752), (21328, 30256)]