19921904

素因数分解:

$2^4\times {\mathrm{79}}^1\times {\mathrm{15761}}^1$

素因数の和:15848

約数の個数: 20

約数和(自身を含む): 39089760

約数和(自身を除く): 19167856

約数列:

[1, 2, 4, 8, 16, 79, 158, 316, 632, 1264, 15761, 31522, 63044, 126088, 252176, 1245119, 2490238, 4980476, 9960952, 19921904]

約数ペア:

[(1, 19921904), (2, 9960952), (4, 4980476), (8, 2490238), (16, 1245119), (79, 252176), (158, 126088), (316, 63044), (632, 31522), (1264, 15761)]