21911266

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{557}}^1$

素因数の和:678

約数の個数: 32

約数和(自身を含む): 37966320

約数和(自身を除く): 16055054

約数列:

[1, 2, 13, 17, 26, 34, 89, 178, 221, 442, 557, 1114, 1157, 1513, 2314, 3026, 7241, 9469, 14482, 18938, 19669, 39338, 49573, 99146, 123097, 246194, 644449, 842741, 1288898, 1685482, 10955633, 21911266]

約数ペア:

[(1, 21911266), (2, 10955633), (13, 1685482), (17, 1288898), (26, 842741), (34, 644449), (89, 246194), (178, 123097), (221, 99146), (442, 49573), (557, 39338), (1114, 19669), (1157, 18938), (1513, 14482), (2314, 9469), (3026, 7241)]