18419860

素因数分解:

$2^2\times 5^1\times {\mathrm{503}}^1\times {\mathrm{1831}}^1$

素因数の和:2343

約数の個数: 24

約数和(自身を含む): 38779776

約数和(自身を除く): 20359916

約数列:

[1, 2, 4, 5, 10, 20, 503, 1006, 1831, 2012, 2515, 3662, 5030, 7324, 9155, 10060, 18310, 36620, 920993, 1841986, 3683972, 4604965, 9209930, 18419860]

約数ペア:

[(1, 18419860), (2, 9209930), (4, 4604965), (5, 3683972), (10, 1841986), (20, 920993), (503, 36620), (1006, 18310), (1831, 10060), (2012, 9155), (2515, 7324), (3662, 5030)]