128741571

素因数分解:

$3^2\times 7^2\times {\mathrm{353}}^1\times {\mathrm{827}}^1$

素因数の和:1200

約数の個数: 36

約数和(自身を含む): 217195992

約数和(自身を除く): 88454421

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 353, 441, 827, 1059, 2471, 2481, 3177, 5789, 7413, 7443, 17297, 17367, 22239, 40523, 51891, 52101, 121569, 155673, 291931, 364707, 875793, 2043517, 2627379, 6130551, 14304619, 18391653, 42913857, 128741571]

約数ペア:

[(1, 128741571), (3, 42913857), (7, 18391653), (9, 14304619), (21, 6130551), (49, 2627379), (63, 2043517), (147, 875793), (353, 364707), (441, 291931), (827, 155673), (1059, 121569), (2471, 52101), (2481, 51891), (3177, 40523), (5789, 22239), (7413, 17367), (7443, 17297)]