2018720720

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{376627}}^1$

素因数の和:376707

約数の個数: 40

約数和(自身を含む): 4763590944

約数和(自身を除く): 2744870224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 536, 670, 1072, 1340, 2680, 5360, 376627, 753254, 1506508, 1883135, 3013016, 3766270, 6026032, 7532540, 15065080, 25234009, 30130160, 50468018, 100936036, 126170045, 201872072, 252340090, 403744144, 504680180, 1009360360, 2018720720]

約数ペア:

[(1, 2018720720), (2, 1009360360), (4, 504680180), (5, 403744144), (8, 252340090), (10, 201872072), (16, 126170045), (20, 100936036), (40, 50468018), (67, 30130160), (80, 25234009), (134, 15065080), (268, 7532540), (335, 6026032), (536, 3766270), (670, 3013016), (1072, 1883135), (1340, 1506508), (2680, 753254), (5360, 376627)]