20671840

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18457}}^1$

素因数の和:18479

約数の個数: 48

約数和(自身を含む): 55816992

約数和(自身を除く): 35145152

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 18457, 36914, 73828, 92285, 129199, 147656, 184570, 258398, 295312, 369140, 516796, 590624, 645995, 738280, 1033592, 1291990, 1476560, 2067184, 2583980, 2953120, 4134368, 5167960, 10335920, 20671840]

約数ペア:

[(1, 20671840), (2, 10335920), (4, 5167960), (5, 4134368), (7, 2953120), (8, 2583980), (10, 2067184), (14, 1476560), (16, 1291990), (20, 1033592), (28, 738280), (32, 645995), (35, 590624), (40, 516796), (56, 369140), (70, 295312), (80, 258398), (112, 184570), (140, 147656), (160, 129199), (224, 92285), (280, 73828), (560, 36914), (1120, 18457)]