19889788

素因数分解:

$2^2\times {\mathrm{83}}^1\times {\mathrm{139}}^1\times {\mathrm{431}}^1$

素因数の和:657

約数の個数: 24

約数和(自身を含む): 35562240

約数和(自身を除く): 15672452

約数列:

[1, 2, 4, 83, 139, 166, 278, 332, 431, 556, 862, 1724, 11537, 23074, 35773, 46148, 59909, 71546, 119818, 143092, 239636, 4972447, 9944894, 19889788]

約数ペア:

[(1, 19889788), (2, 9944894), (4, 4972447), (83, 239636), (139, 143092), (166, 119818), (278, 71546), (332, 59909), (431, 46148), (556, 35773), (862, 23074), (1724, 11537)]