81690616

素因数分解:

$2^3\times 7^1\times {\mathrm{491}}^1\times {\mathrm{2971}}^1$

素因数の和:3475

約数の個数: 32

約数和(自身を含む): 175466880

約数和(自身を除く): 93776264

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 491, 982, 1964, 2971, 3437, 3928, 5942, 6874, 11884, 13748, 20797, 23768, 27496, 41594, 83188, 166376, 1458761, 2917522, 5835044, 10211327, 11670088, 20422654, 40845308, 81690616]

約数ペア:

[(1, 81690616), (2, 40845308), (4, 20422654), (7, 11670088), (8, 10211327), (14, 5835044), (28, 2917522), (56, 1458761), (491, 166376), (982, 83188), (1964, 41594), (2971, 27496), (3437, 23768), (3928, 20797), (5942, 13748), (6874, 11884)]