80666720

素因数分解:

$2^5\times 5^1\times {\mathrm{227}}^1\times {\mathrm{2221}}^1$

素因数の和:2463

約数の個数: 48

約数和(自身を含む): 191500848

約数和(自身を除く): 110834128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 227, 454, 908, 1135, 1816, 2221, 2270, 3632, 4442, 4540, 7264, 8884, 9080, 11105, 17768, 18160, 22210, 35536, 36320, 44420, 71072, 88840, 177680, 355360, 504167, 1008334, 2016668, 2520835, 4033336, 5041670, 8066672, 10083340, 16133344, 20166680, 40333360, 80666720]

約数ペア:

[(1, 80666720), (2, 40333360), (4, 20166680), (5, 16133344), (8, 10083340), (10, 8066672), (16, 5041670), (20, 4033336), (32, 2520835), (40, 2016668), (80, 1008334), (160, 504167), (227, 355360), (454, 177680), (908, 88840), (1135, 71072), (1816, 44420), (2221, 36320), (2270, 35536), (3632, 22210), (4442, 18160), (4540, 17768), (7264, 11105), (8884, 9080)]