18072021

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:130

約数の個数: 48

約数和(自身を含む): 29187648

約数和(自身を除く): 11115627

約数列:

[1, 3, 11, 19, 33, 37, 41, 57, 111, 123, 209, 361, 407, 451, 627, 703, 779, 1083, 1221, 1353, 1517, 2109, 2337, 3971, 4551, 7733, 8569, 11913, 13357, 14801, 16687, 23199, 25707, 28823, 40071, 44403, 50061, 86469, 146927, 162811, 317053, 440781, 488433, 547637, 951159, 1642911, 6024007, 18072021]

約数ペア:

[(1, 18072021), (3, 6024007), (11, 1642911), (19, 951159), (33, 547637), (37, 488433), (41, 440781), (57, 317053), (111, 162811), (123, 146927), (209, 86469), (361, 50061), (407, 44403), (451, 40071), (627, 28823), (703, 25707), (779, 23199), (1083, 16687), (1221, 14801), (1353, 13357), (1517, 11913), (2109, 8569), (2337, 7733), (3971, 4551)]