256423908

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{1643743}}^1$

素因数の和:1643763

約数の個数: 24

約数和(自身を含む): 644347648

約数和(自身を除く): 387923740

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 1643743, 3287486, 4931229, 6574972, 9862458, 19724916, 21368659, 42737318, 64105977, 85474636, 128211954, 256423908]

約数ペア:

[(1, 256423908), (2, 128211954), (3, 85474636), (4, 64105977), (6, 42737318), (12, 21368659), (13, 19724916), (26, 9862458), (39, 6574972), (52, 4931229), (78, 3287486), (156, 1643743)]