1988559

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{401}}^1$

素因数の和:455

約数の個数: 24

約数和(自身を含む): 3135600

約数和(自身を除く): 1147041

約数列:

[1, 3, 9, 19, 29, 57, 87, 171, 261, 401, 551, 1203, 1653, 3609, 4959, 7619, 11629, 22857, 34887, 68571, 104661, 220951, 662853, 1988559]

約数ペア:

[(1, 1988559), (3, 662853), (9, 220951), (19, 104661), (29, 68571), (57, 34887), (87, 22857), (171, 11629), (261, 7619), (401, 4959), (551, 3609), (1203, 1653)]