68857840

素因数分解:

$2^4\times 5^1\times {\mathrm{491}}^1\times {\mathrm{1753}}^1$

素因数の和:2257

約数の個数: 40

約数和(自身を含む): 160512048

約数和(自身を除く): 91654208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 491, 982, 1753, 1964, 2455, 3506, 3928, 4910, 7012, 7856, 8765, 9820, 14024, 17530, 19640, 28048, 35060, 39280, 70120, 140240, 860723, 1721446, 3442892, 4303615, 6885784, 8607230, 13771568, 17214460, 34428920, 68857840]

約数ペア:

[(1, 68857840), (2, 34428920), (4, 17214460), (5, 13771568), (8, 8607230), (10, 6885784), (16, 4303615), (20, 3442892), (40, 1721446), (80, 860723), (491, 140240), (982, 70120), (1753, 39280), (1964, 35060), (2455, 28048), (3506, 19640), (3928, 17530), (4910, 14024), (7012, 9820), (7856, 8765)]