399768064

素因数分解:

$2^9\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{283}}^1$

素因数の和:421

約数の個数: 80

約数和(自身を含む): 836732160

約数和(自身を除く): 436964096

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 89, 124, 128, 178, 248, 256, 283, 356, 496, 512, 566, 712, 992, 1132, 1424, 1984, 2264, 2759, 2848, 3968, 4528, 5518, 5696, 7936, 8773, 9056, 11036, 11392, 15872, 17546, 18112, 22072, 22784, 25187, 35092, 36224, 44144, 45568, 50374, 70184, 72448, 88288, 100748, 140368, 144896, 176576, 201496, 280736, 353152, 402992, 561472, 706304, 780797, 805984, 1122944, 1412608, 1561594, 1611968, 2245888, 3123188, 3223936, 4491776, 6246376, 6447872, 12492752, 12895744, 24985504, 49971008, 99942016, 199884032, 399768064]

約数ペア:

[(1, 399768064), (2, 199884032), (4, 99942016), (8, 49971008), (16, 24985504), (31, 12895744), (32, 12492752), (62, 6447872), (64, 6246376), (89, 4491776), (124, 3223936), (128, 3123188), (178, 2245888), (248, 1611968), (256, 1561594), (283, 1412608), (356, 1122944), (496, 805984), (512, 780797), (566, 706304), (712, 561472), (992, 402992), (1132, 353152), (1424, 280736), (1984, 201496), (2264, 176576), (2759, 144896), (2848, 140368), (3968, 100748), (4528, 88288), (5518, 72448), (5696, 70184), (7936, 50374), (8773, 45568), (9056, 44144), (11036, 36224), (11392, 35092), (15872, 25187), (17546, 22784), (18112, 22072)]