19811477

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{229}}^1\times {\mathrm{727}}^1$

素因数の和:980

約数の個数: 16

約数和(自身を含む): 24111360

約数和(自身を除く): 4299883

約数列:

[1, 7, 17, 119, 229, 727, 1603, 3893, 5089, 12359, 27251, 86513, 166483, 1165381, 2830211, 19811477]

約数ペア:

[(1, 19811477), (7, 2830211), (17, 1165381), (119, 166483), (229, 86513), (727, 27251), (1603, 12359), (3893, 5089)]