681328640

素因数分解:

$2^{14}\times 5^1\times {\mathrm{8317}}^1$

素因数の和:8350

約数の個数: 60

約数和(自身を含む): 1635335436

約数和(自身を除く): 954006796

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2048, 2560, 4096, 5120, 8192, 8317, 10240, 16384, 16634, 20480, 33268, 40960, 41585, 66536, 81920, 83170, 133072, 166340, 266144, 332680, 532288, 665360, 1064576, 1330720, 2129152, 2661440, 4258304, 5322880, 8516608, 10645760, 17033216, 21291520, 34066432, 42583040, 68132864, 85166080, 136265728, 170332160, 340664320, 681328640]

約数ペア:

[(1, 681328640), (2, 340664320), (4, 170332160), (5, 136265728), (8, 85166080), (10, 68132864), (16, 42583040), (20, 34066432), (32, 21291520), (40, 17033216), (64, 10645760), (80, 8516608), (128, 5322880), (160, 4258304), (256, 2661440), (320, 2129152), (512, 1330720), (640, 1064576), (1024, 665360), (1280, 532288), (2048, 332680), (2560, 266144), (4096, 166340), (5120, 133072), (8192, 83170), (8317, 81920), (10240, 66536), (16384, 41585), (16634, 40960), (20480, 33268)]