68641280

素因数分解:

$2^9\times 5^1\times {\mathrm{26813}}^1$

素因数の和:26836

約数の個数: 40

約数和(自身を含む): 164584332

約数和(自身を除く): 95943052

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 26813, 53626, 107252, 134065, 214504, 268130, 429008, 536260, 858016, 1072520, 1716032, 2145040, 3432064, 4290080, 6864128, 8580160, 13728256, 17160320, 34320640, 68641280]

約数ペア:

[(1, 68641280), (2, 34320640), (4, 17160320), (5, 13728256), (8, 8580160), (10, 6864128), (16, 4290080), (20, 3432064), (32, 2145040), (40, 1716032), (64, 1072520), (80, 858016), (128, 536260), (160, 429008), (256, 268130), (320, 214504), (512, 134065), (640, 107252), (1280, 53626), (2560, 26813)]