128555440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1741}}^1$

素因数の和:1838

約数の個数: 80

約数和(自身を含む): 326604096

約数和(自身を除く): 198048656

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 71, 80, 104, 130, 142, 208, 260, 284, 355, 520, 568, 710, 923, 1040, 1136, 1420, 1741, 1846, 2840, 3482, 3692, 4615, 5680, 6964, 7384, 8705, 9230, 13928, 14768, 17410, 18460, 22633, 27856, 34820, 36920, 45266, 69640, 73840, 90532, 113165, 123611, 139280, 181064, 226330, 247222, 362128, 452660, 494444, 618055, 905320, 988888, 1236110, 1606943, 1810640, 1977776, 2472220, 3213886, 4944440, 6427772, 8034715, 9888880, 12855544, 16069430, 25711088, 32138860, 64277720, 128555440]

約数ペア:

[(1, 128555440), (2, 64277720), (4, 32138860), (5, 25711088), (8, 16069430), (10, 12855544), (13, 9888880), (16, 8034715), (20, 6427772), (26, 4944440), (40, 3213886), (52, 2472220), (65, 1977776), (71, 1810640), (80, 1606943), (104, 1236110), (130, 988888), (142, 905320), (208, 618055), (260, 494444), (284, 452660), (355, 362128), (520, 247222), (568, 226330), (710, 181064), (923, 139280), (1040, 123611), (1136, 113165), (1420, 90532), (1741, 73840), (1846, 69640), (2840, 45266), (3482, 36920), (3692, 34820), (4615, 27856), (5680, 22633), (6964, 18460), (7384, 17410), (8705, 14768), (9230, 13928)]