71253920

素因数分解:

$2^5\times 5^1\times {\mathrm{491}}^1\times {\mathrm{907}}^1$

素因数の和:1413

約数の個数: 48

約数和(自身を含む): 168866208

約数和(自身を除く): 97612288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 491, 907, 982, 1814, 1964, 2455, 3628, 3928, 4535, 4910, 7256, 7856, 9070, 9820, 14512, 15712, 18140, 19640, 29024, 36280, 39280, 72560, 78560, 145120, 445337, 890674, 1781348, 2226685, 3562696, 4453370, 7125392, 8906740, 14250784, 17813480, 35626960, 71253920]

約数ペア:

[(1, 71253920), (2, 35626960), (4, 17813480), (5, 14250784), (8, 8906740), (10, 7125392), (16, 4453370), (20, 3562696), (32, 2226685), (40, 1781348), (80, 890674), (160, 445337), (491, 145120), (907, 78560), (982, 72560), (1814, 39280), (1964, 36280), (2455, 29024), (3628, 19640), (3928, 18140), (4535, 15712), (4910, 14512), (7256, 9820), (7856, 9070)]