81431784

素因数分解:

$2^3\times 3^3\times 7^1\times {\mathrm{53857}}^1$

素因数の和:53879

約数の個数: 64

約数和(自身を含む): 258518400

約数和(自身を除く): 177086616

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 36, 42, 54, 56, 63, 72, 84, 108, 126, 168, 189, 216, 252, 378, 504, 756, 1512, 53857, 107714, 161571, 215428, 323142, 376999, 430856, 484713, 646284, 753998, 969426, 1130997, 1292568, 1454139, 1507996, 1938852, 2261994, 2908278, 3015992, 3392991, 3877704, 4523988, 5816556, 6785982, 9047976, 10178973, 11633112, 13571964, 20357946, 27143928, 40715892, 81431784]

約数ペア:

[(1, 81431784), (2, 40715892), (3, 27143928), (4, 20357946), (6, 13571964), (7, 11633112), (8, 10178973), (9, 9047976), (12, 6785982), (14, 5816556), (18, 4523988), (21, 3877704), (24, 3392991), (27, 3015992), (28, 2908278), (36, 2261994), (42, 1938852), (54, 1507996), (56, 1454139), (63, 1292568), (72, 1130997), (84, 969426), (108, 753998), (126, 646284), (168, 484713), (189, 430856), (216, 376999), (252, 323142), (378, 215428), (504, 161571), (756, 107714), (1512, 53857)]