21475233

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:159

約数の個数: 64

約数和(自身を含む): 37497600

約数和(自身を除く): 16022367

約数列:

[1, 3, 9, 13, 17, 27, 39, 51, 59, 61, 117, 153, 177, 183, 221, 351, 459, 531, 549, 663, 767, 793, 1003, 1037, 1593, 1647, 1989, 2301, 2379, 3009, 3111, 3599, 5967, 6903, 7137, 9027, 9333, 10797, 13039, 13481, 20709, 21411, 27081, 27999, 32391, 39117, 40443, 46787, 61183, 97173, 117351, 121329, 140361, 183549, 352053, 363987, 421083, 550647, 795379, 1263249, 1651941, 2386137, 7158411, 21475233]

約数ペア:

[(1, 21475233), (3, 7158411), (9, 2386137), (13, 1651941), (17, 1263249), (27, 795379), (39, 550647), (51, 421083), (59, 363987), (61, 352053), (117, 183549), (153, 140361), (177, 121329), (183, 117351), (221, 97173), (351, 61183), (459, 46787), (531, 40443), (549, 39117), (663, 32391), (767, 27999), (793, 27081), (1003, 21411), (1037, 20709), (1593, 13481), (1647, 13039), (1989, 10797), (2301, 9333), (2379, 9027), (3009, 7137), (3111, 6903), (3599, 5967)]