19978190

素因数分解:

$2^1\times 5^1\times {\mathrm{179}}^1\times {\mathrm{11161}}^1$

素因数の和:11347

約数の個数: 16

約数和(自身を含む): 36164880

約数和(自身を除く): 16186690

約数列:

[1, 2, 5, 10, 179, 358, 895, 1790, 11161, 22322, 55805, 111610, 1997819, 3995638, 9989095, 19978190]

約数ペア:

[(1, 19978190), (2, 9989095), (5, 3995638), (10, 1997819), (179, 111610), (358, 55805), (895, 22322), (1790, 11161)]