20731256

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{28477}}^1$

素因数の和:28503

約数の個数: 32

約数和(自身を含む): 47843040

約数和(自身を除く): 27111784

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728, 28477, 56954, 113908, 199339, 227816, 370201, 398678, 740402, 797356, 1480804, 1594712, 2591407, 2961608, 5182814, 10365628, 20731256]

約数ペア:

[(1, 20731256), (2, 10365628), (4, 5182814), (7, 2961608), (8, 2591407), (13, 1594712), (14, 1480804), (26, 797356), (28, 740402), (52, 398678), (56, 370201), (91, 227816), (104, 199339), (182, 113908), (364, 56954), (728, 28477)]