640816128

素因数分解:

$2^{10}\times 3^2\times {\mathrm{31}}^1\times {\mathrm{2243}}^1$

素因数の和:2300

約数の個数: 132

約数和(自身を含む): 1910882688

約数和(自身を除く): 1270066560

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 31, 32, 36, 48, 62, 64, 72, 93, 96, 124, 128, 144, 186, 192, 248, 256, 279, 288, 372, 384, 496, 512, 558, 576, 744, 768, 992, 1024, 1116, 1152, 1488, 1536, 1984, 2232, 2243, 2304, 2976, 3072, 3968, 4464, 4486, 4608, 5952, 6729, 7936, 8928, 8972, 9216, 11904, 13458, 15872, 17856, 17944, 20187, 23808, 26916, 31744, 35712, 35888, 40374, 47616, 53832, 69533, 71424, 71776, 80748, 95232, 107664, 139066, 142848, 143552, 161496, 208599, 215328, 278132, 285696, 287104, 322992, 417198, 430656, 556264, 574208, 625797, 645984, 834396, 861312, 1112528, 1148416, 1251594, 1291968, 1668792, 1722624, 2225056, 2296832, 2503188, 2583936, 3337584, 3445248, 4450112, 5006376, 5167872, 6675168, 6890496, 8900224, 10012752, 10335744, 13350336, 17800448, 20025504, 20671488, 26700672, 35600896, 40051008, 53401344, 71201792, 80102016, 106802688, 160204032, 213605376, 320408064, 640816128]

約数ペア:

[(1, 640816128), (2, 320408064), (3, 213605376), (4, 160204032), (6, 106802688), (8, 80102016), (9, 71201792), (12, 53401344), (16, 40051008), (18, 35600896), (24, 26700672), (31, 20671488), (32, 20025504), (36, 17800448), (48, 13350336), (62, 10335744), (64, 10012752), (72, 8900224), (93, 6890496), (96, 6675168), (124, 5167872), (128, 5006376), (144, 4450112), (186, 3445248), (192, 3337584), (248, 2583936), (256, 2503188), (279, 2296832), (288, 2225056), (372, 1722624), (384, 1668792), (496, 1291968), (512, 1251594), (558, 1148416), (576, 1112528), (744, 861312), (768, 834396), (992, 645984), (1024, 625797), (1116, 574208), (1152, 556264), (1488, 430656), (1536, 417198), (1984, 322992), (2232, 287104), (2243, 285696), (2304, 278132), (2976, 215328), (3072, 208599), (3968, 161496), (4464, 143552), (4486, 142848), (4608, 139066), (5952, 107664), (6729, 95232), (7936, 80748), (8928, 71776), (8972, 71424), (9216, 69533), (11904, 53832), (13458, 47616), (15872, 40374), (17856, 35888), (17944, 35712), (20187, 31744), (23808, 26916)]