256943128

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{79697}}^1$

素因数の和:79747

約数の個数: 32

約数和(自身を含む): 535570560

約数和(自身を除く): 278627432

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 104, 124, 248, 403, 806, 1612, 3224, 79697, 159394, 318788, 637576, 1036061, 2072122, 2470607, 4144244, 4941214, 8288488, 9882428, 19764856, 32117891, 64235782, 128471564, 256943128]

約数ペア:

[(1, 256943128), (2, 128471564), (4, 64235782), (8, 32117891), (13, 19764856), (26, 9882428), (31, 8288488), (52, 4941214), (62, 4144244), (104, 2470607), (124, 2072122), (248, 1036061), (403, 637576), (806, 318788), (1612, 159394), (3224, 79697)]