20105890880

素因数分解:

$2^6\times 5^1\times {\mathrm{479}}^1\times {\mathrm{131171}}^1$

素因数の和:131667

約数の個数: 56

約数和(自身を含む): 47977470720

約数和(自身を除く): 27871579840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 479, 958, 1916, 2395, 3832, 4790, 7664, 9580, 15328, 19160, 30656, 38320, 76640, 131171, 153280, 262342, 524684, 655855, 1049368, 1311710, 2098736, 2623420, 4197472, 5246840, 8394944, 10493680, 20987360, 41974720, 62830909, 125661818, 251323636, 314154545, 502647272, 628309090, 1005294544, 1256618180, 2010589088, 2513236360, 4021178176, 5026472720, 10052945440, 20105890880]

約数ペア:

[(1, 20105890880), (2, 10052945440), (4, 5026472720), (5, 4021178176), (8, 2513236360), (10, 2010589088), (16, 1256618180), (20, 1005294544), (32, 628309090), (40, 502647272), (64, 314154545), (80, 251323636), (160, 125661818), (320, 62830909), (479, 41974720), (958, 20987360), (1916, 10493680), (2395, 8394944), (3832, 5246840), (4790, 4197472), (7664, 2623420), (9580, 2098736), (15328, 1311710), (19160, 1049368), (30656, 655855), (38320, 524684), (76640, 262342), (131171, 153280)]