28457289

素因数分解:

$3^2\times 7^2\times {\mathrm{173}}^1\times {\mathrm{373}}^1$

素因数の和:566

約数の個数: 36

約数和(自身を含む): 48221316

約数和(自身を除く): 19764027

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 173, 373, 441, 519, 1119, 1211, 1557, 2611, 3357, 3633, 7833, 8477, 10899, 18277, 23499, 25431, 54831, 64529, 76293, 164493, 193587, 451703, 580761, 1355109, 3161921, 4065327, 9485763, 28457289]

約数ペア:

[(1, 28457289), (3, 9485763), (7, 4065327), (9, 3161921), (21, 1355109), (49, 580761), (63, 451703), (147, 193587), (173, 164493), (373, 76293), (441, 64529), (519, 54831), (1119, 25431), (1211, 23499), (1557, 18277), (2611, 10899), (3357, 8477), (3633, 7833)]