20404556

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{929}}^1$

素因数の和:986

約数の個数: 36

約数和(自身を含む): 39971400

約数和(自身を除く): 19566844

約数列:

[1, 2, 4, 17, 19, 34, 38, 68, 76, 289, 323, 578, 646, 929, 1156, 1292, 1858, 3716, 5491, 10982, 15793, 17651, 21964, 31586, 35302, 63172, 70604, 268481, 300067, 536962, 600134, 1073924, 1200268, 5101139, 10202278, 20404556]

約数ペア:

[(1, 20404556), (2, 10202278), (4, 5101139), (17, 1200268), (19, 1073924), (34, 600134), (38, 536962), (68, 300067), (76, 268481), (289, 70604), (323, 63172), (578, 35302), (646, 31586), (929, 21964), (1156, 17651), (1292, 15793), (1858, 10982), (3716, 5491)]