20089820

素因数分解:

$2^2\times 5^1\times {\mathrm{503}}^1\times {\mathrm{1997}}^1$

素因数の和:2509

約数の個数: 24

約数和(自身を含む): 42293664

約数和(自身を除く): 22203844

約数列:

[1, 2, 4, 5, 10, 20, 503, 1006, 1997, 2012, 2515, 3994, 5030, 7988, 9985, 10060, 19970, 39940, 1004491, 2008982, 4017964, 5022455, 10044910, 20089820]

約数ペア:

[(1, 20089820), (2, 10044910), (4, 5022455), (5, 4017964), (10, 2008982), (20, 1004491), (503, 39940), (1006, 19970), (1997, 10060), (2012, 9985), (2515, 7988), (3994, 5030)]