408080080

素因数分解:

$2^4\times 5^1\times {\mathrm{1861}}^1\times {\mathrm{2741}}^1$

素因数の和:4615

約数の個数: 40

約数和(自身を含む): 949642344

約数和(自身を除く): 541562264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1861, 2741, 3722, 5482, 7444, 9305, 10964, 13705, 14888, 18610, 21928, 27410, 29776, 37220, 43856, 54820, 74440, 109640, 148880, 219280, 5101001, 10202002, 20404004, 25505005, 40808008, 51010010, 81616016, 102020020, 204040040, 408080080]

約数ペア:

[(1, 408080080), (2, 204040040), (4, 102020020), (5, 81616016), (8, 51010010), (10, 40808008), (16, 25505005), (20, 20404004), (40, 10202002), (80, 5101001), (1861, 219280), (2741, 148880), (3722, 109640), (5482, 74440), (7444, 54820), (9305, 43856), (10964, 37220), (13705, 29776), (14888, 27410), (18610, 21928)]