19902404

素因数分解:

$2^2\times {\mathrm{83}}^1\times {\mathrm{151}}^1\times {\mathrm{397}}^1$

素因数の和:635

約数の個数: 24

約数和(自身を含む): 35571648

約数和(自身を除く): 15669244

約数列:

[1, 2, 4, 83, 151, 166, 302, 332, 397, 604, 794, 1588, 12533, 25066, 32951, 50132, 59947, 65902, 119894, 131804, 239788, 4975601, 9951202, 19902404]

約数ペア:

[(1, 19902404), (2, 9951202), (4, 4975601), (83, 239788), (151, 131804), (166, 119894), (302, 65902), (332, 59947), (397, 50132), (604, 32951), (794, 25066), (1588, 12533)]