81473440

素因数分解:

$2^5\times 5^1\times {\mathrm{271}}^1\times {\mathrm{1879}}^1$

素因数の和:2165

約数の個数: 48

約数和(自身を含む): 193294080

約数和(自身を除く): 111820640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 271, 542, 1084, 1355, 1879, 2168, 2710, 3758, 4336, 5420, 7516, 8672, 9395, 10840, 15032, 18790, 21680, 30064, 37580, 43360, 60128, 75160, 150320, 300640, 509209, 1018418, 2036836, 2546045, 4073672, 5092090, 8147344, 10184180, 16294688, 20368360, 40736720, 81473440]

約数ペア:

[(1, 81473440), (2, 40736720), (4, 20368360), (5, 16294688), (8, 10184180), (10, 8147344), (16, 5092090), (20, 4073672), (32, 2546045), (40, 2036836), (80, 1018418), (160, 509209), (271, 300640), (542, 150320), (1084, 75160), (1355, 60128), (1879, 43360), (2168, 37580), (2710, 30064), (3758, 21680), (4336, 18790), (5420, 15032), (7516, 10840), (8672, 9395)]