64870880

素因数分解:

$2^5\times 5^1\times {\mathrm{317}}^1\times {\mathrm{1279}}^1$

素因数の和:1611

約数の個数: 48

約数和(自身を含む): 153861120

約数和(自身を除く): 88990240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 317, 634, 1268, 1279, 1585, 2536, 2558, 3170, 5072, 5116, 6340, 6395, 10144, 10232, 12680, 12790, 20464, 25360, 25580, 40928, 50720, 51160, 102320, 204640, 405443, 810886, 1621772, 2027215, 3243544, 4054430, 6487088, 8108860, 12974176, 16217720, 32435440, 64870880]

約数ペア:

[(1, 64870880), (2, 32435440), (4, 16217720), (5, 12974176), (8, 8108860), (10, 6487088), (16, 4054430), (20, 3243544), (32, 2027215), (40, 1621772), (80, 810886), (160, 405443), (317, 204640), (634, 102320), (1268, 51160), (1279, 50720), (1585, 40928), (2536, 25580), (2558, 25360), (3170, 20464), (5072, 12790), (5116, 12680), (6340, 10232), (6395, 10144)]