638498816

素因数分解:

$2^{11}\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1$

素因数の和:255

約数の個数: 96

約数和(自身を含む): 1344470400

約数和(自身を除く): 705971584

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 89, 113, 124, 128, 178, 226, 248, 256, 356, 452, 496, 512, 712, 904, 992, 1024, 1424, 1808, 1984, 2048, 2759, 2848, 3503, 3616, 3968, 5518, 5696, 7006, 7232, 7936, 10057, 11036, 11392, 14012, 14464, 15872, 20114, 22072, 22784, 28024, 28928, 31744, 40228, 44144, 45568, 56048, 57856, 63488, 80456, 88288, 91136, 112096, 115712, 160912, 176576, 182272, 224192, 231424, 311767, 321824, 353152, 448384, 623534, 643648, 706304, 896768, 1247068, 1287296, 1412608, 1793536, 2494136, 2574592, 2825216, 3587072, 4988272, 5149184, 5650432, 7174144, 9976544, 10298368, 19953088, 20596736, 39906176, 79812352, 159624704, 319249408, 638498816]

約数ペア:

[(1, 638498816), (2, 319249408), (4, 159624704), (8, 79812352), (16, 39906176), (31, 20596736), (32, 19953088), (62, 10298368), (64, 9976544), (89, 7174144), (113, 5650432), (124, 5149184), (128, 4988272), (178, 3587072), (226, 2825216), (248, 2574592), (256, 2494136), (356, 1793536), (452, 1412608), (496, 1287296), (512, 1247068), (712, 896768), (904, 706304), (992, 643648), (1024, 623534), (1424, 448384), (1808, 353152), (1984, 321824), (2048, 311767), (2759, 231424), (2848, 224192), (3503, 182272), (3616, 176576), (3968, 160912), (5518, 115712), (5696, 112096), (7006, 91136), (7232, 88288), (7936, 80456), (10057, 63488), (11036, 57856), (11392, 56048), (14012, 45568), (14464, 44144), (15872, 40228), (20114, 31744), (22072, 28928), (22784, 28024)]