19973978

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{59}}^2\times {\mathrm{151}}^1$

素因数の和:290

約数の個数: 24

約数和(自身を含む): 32293920

約数和(自身を除く): 12319942

約数列:

[1, 2, 19, 38, 59, 118, 151, 302, 1121, 2242, 2869, 3481, 5738, 6962, 8909, 17818, 66139, 132278, 169271, 338542, 525631, 1051262, 9986989, 19973978]

約数ペア:

[(1, 19973978), (2, 9986989), (19, 1051262), (38, 525631), (59, 338542), (118, 169271), (151, 132278), (302, 66139), (1121, 17818), (2242, 8909), (2869, 6962), (3481, 5738)]