1028641280

素因数分解:

$2^9\times 5^1\times {\mathrm{401813}}^1$

素因数の和:401836

約数の個数: 40

約数和(自身を含む): 2466334332

約数和(自身を除く): 1437693052

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 401813, 803626, 1607252, 2009065, 3214504, 4018130, 6429008, 8036260, 12858016, 16072520, 25716032, 32145040, 51432064, 64290080, 102864128, 128580160, 205728256, 257160320, 514320640, 1028641280]

約数ペア:

[(1, 1028641280), (2, 514320640), (4, 257160320), (5, 205728256), (8, 128580160), (10, 102864128), (16, 64290080), (20, 51432064), (32, 32145040), (40, 25716032), (64, 16072520), (80, 12858016), (128, 8036260), (160, 6429008), (256, 4018130), (320, 3214504), (512, 2009065), (640, 1607252), (1280, 803626), (2560, 401813)]