12980900

素因数分解:

$2^2\times 5^2\times {\mathrm{271}}^1\times {\mathrm{479}}^1$

素因数の和:764

約数の個数: 36

約数和(自身を含む): 28331520

約数和(自身を除く): 15350620

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 271, 479, 542, 958, 1084, 1355, 1916, 2395, 2710, 4790, 5420, 6775, 9580, 11975, 13550, 23950, 27100, 47900, 129809, 259618, 519236, 649045, 1298090, 2596180, 3245225, 6490450, 12980900]

約数ペア:

[(1, 12980900), (2, 6490450), (4, 3245225), (5, 2596180), (10, 1298090), (20, 649045), (25, 519236), (50, 259618), (100, 129809), (271, 47900), (479, 27100), (542, 23950), (958, 13550), (1084, 11975), (1355, 9580), (1916, 6775), (2395, 5420), (2710, 4790)]