28242781

素因数分解:

$7^1\times {\mathrm{23}}^2\times {\mathrm{29}}^1\times {\mathrm{263}}^1$

素因数の和:345

約数の個数: 24

約数和(自身を含む): 35038080

約数和(自身を除く): 6795299

約数列:

[1, 7, 23, 29, 161, 203, 263, 529, 667, 1841, 3703, 4669, 6049, 7627, 15341, 42343, 53389, 107387, 139127, 175421, 973889, 1227947, 4034683, 28242781]

約数ペア:

[(1, 28242781), (7, 4034683), (23, 1227947), (29, 973889), (161, 175421), (203, 139127), (263, 107387), (529, 53389), (667, 42343), (1841, 15341), (3703, 7627), (4669, 6049)]