18402020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{10111}}^1$

素因数の和:10140

約数の個数: 48

約数和(自身を含む): 47566848

約数和(自身を除く): 29164828

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 10111, 20222, 40444, 50555, 70777, 101110, 131443, 141554, 202220, 262886, 283108, 353885, 525772, 657215, 707770, 920101, 1314430, 1415540, 1840202, 2628860, 3680404, 4600505, 9201010, 18402020]

約数ペア:

[(1, 18402020), (2, 9201010), (4, 4600505), (5, 3680404), (7, 2628860), (10, 1840202), (13, 1415540), (14, 1314430), (20, 920101), (26, 707770), (28, 657215), (35, 525772), (52, 353885), (65, 283108), (70, 262886), (91, 202220), (130, 141554), (140, 131443), (182, 101110), (260, 70777), (364, 50555), (455, 40444), (910, 20222), (1820, 10111)]