20105211

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1229}}^1$

素因数の和:1299

約数の個数: 32

約数和(自身を含む): 33062400

約数和(自身を除く): 12957189

約数列:

[1, 3, 7, 19, 21, 41, 57, 123, 133, 287, 399, 779, 861, 1229, 2337, 3687, 5453, 8603, 16359, 23351, 25809, 50389, 70053, 151167, 163457, 352723, 490371, 957391, 1058169, 2872173, 6701737, 20105211]

約数ペア:

[(1, 20105211), (3, 6701737), (7, 2872173), (19, 1058169), (21, 957391), (41, 490371), (57, 352723), (123, 163457), (133, 151167), (287, 70053), (399, 50389), (779, 25809), (861, 23351), (1229, 16359), (2337, 8603), (3687, 5453)]