21745563

素因数分解:

$3^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{5101}}^1$

素因数の和:5147

約数の個数: 24

約数和(自身を含む): 34897680

約数和(自身を除く): 13152117

約数列:

[1, 3, 7, 21, 29, 49, 87, 147, 203, 609, 1421, 4263, 5101, 15303, 35707, 107121, 147929, 249949, 443787, 749847, 1035503, 3106509, 7248521, 21745563]

約数ペア:

[(1, 21745563), (3, 7248521), (7, 3106509), (21, 1035503), (29, 749847), (49, 443787), (87, 249949), (147, 147929), (203, 107121), (609, 35707), (1421, 15303), (4263, 5101)]