256701321

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1\times {\mathrm{223}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 399200256

約数和(自身を除く): 142498935

約数列:

[1, 3, 9, 23, 67, 69, 83, 201, 207, 223, 249, 603, 669, 747, 1541, 1909, 2007, 4623, 5129, 5561, 5727, 13869, 14941, 15387, 16683, 17181, 18509, 44823, 46161, 50049, 55527, 127903, 134469, 166581, 343643, 383709, 425707, 1030929, 1151127, 1240103, 1277121, 3092787, 3720309, 3831363, 11160927, 28522369, 85567107, 256701321]

約数ペア:

[(1, 256701321), (3, 85567107), (9, 28522369), (23, 11160927), (67, 3831363), (69, 3720309), (83, 3092787), (201, 1277121), (207, 1240103), (223, 1151127), (249, 1030929), (603, 425707), (669, 383709), (747, 343643), (1541, 166581), (1909, 134469), (2007, 127903), (4623, 55527), (5129, 50049), (5561, 46161), (5727, 44823), (13869, 18509), (14941, 17181), (15387, 16683)]