19977764

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{2207}}^1$

素因数の和:2315

約数の個数: 24

約数和(自身を含む): 36599808

約数和(自身を除く): 16622044

約数列:

[1, 2, 4, 31, 62, 73, 124, 146, 292, 2207, 2263, 4414, 4526, 8828, 9052, 68417, 136834, 161111, 273668, 322222, 644444, 4994441, 9988882, 19977764]

約数ペア:

[(1, 19977764), (2, 9988882), (4, 4994441), (31, 644444), (62, 322222), (73, 273668), (124, 161111), (146, 136834), (292, 68417), (2207, 9052), (2263, 8828), (4414, 4526)]