12456680

素因数分解:

$2^3\times 5^1\times {\mathrm{239}}^1\times {\mathrm{1303}}^1$

素因数の和:1553

約数の個数: 32

約数和(自身を含む): 28166400

約数和(自身を除く): 15709720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 239, 478, 956, 1195, 1303, 1912, 2390, 2606, 4780, 5212, 6515, 9560, 10424, 13030, 26060, 52120, 311417, 622834, 1245668, 1557085, 2491336, 3114170, 6228340, 12456680]

約数ペア:

[(1, 12456680), (2, 6228340), (4, 3114170), (5, 2491336), (8, 1557085), (10, 1245668), (20, 622834), (40, 311417), (239, 52120), (478, 26060), (956, 13030), (1195, 10424), (1303, 9560), (1912, 6515), (2390, 5212), (2606, 4780)]