16821915

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{269}}^1\times {\mathrm{379}}^1$

素因数の和:667

約数の個数: 32

約数和(自身を含む): 29548800

約数和(自身を除く): 12726885

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 269, 379, 807, 1137, 1345, 1895, 2959, 4035, 4169, 5685, 8877, 12507, 14795, 20845, 44385, 62535, 101951, 305853, 509755, 1121461, 1529265, 3364383, 5607305, 16821915]

約数ペア:

[(1, 16821915), (3, 5607305), (5, 3364383), (11, 1529265), (15, 1121461), (33, 509755), (55, 305853), (165, 101951), (269, 62535), (379, 44385), (807, 20845), (1137, 14795), (1345, 12507), (1895, 8877), (2959, 5685), (4035, 4169)]