17909920

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{15991}}^1$

素因数の和:16013

約数の個数: 48

約数和(自身を含む): 48359808

約数和(自身を除く): 30449888

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, 15991, 31982, 63964, 79955, 111937, 127928, 159910, 223874, 255856, 319820, 447748, 511712, 559685, 639640, 895496, 1119370, 1279280, 1790992, 2238740, 2558560, 3581984, 4477480, 8954960, 17909920]

約数ペア:

[(1, 17909920), (2, 8954960), (4, 4477480), (5, 3581984), (7, 2558560), (8, 2238740), (10, 1790992), (14, 1279280), (16, 1119370), (20, 895496), (28, 639640), (32, 559685), (35, 511712), (40, 447748), (56, 319820), (70, 255856), (80, 223874), (112, 159910), (140, 127928), (160, 111937), (224, 79955), (280, 63964), (560, 31982), (1120, 15991)]