20568716

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^2$

素因数の和:135

約数の個数: 72

約数和(自身を含む): 46314240

約数和(自身を除く): 25745524

約数列:

[1, 2, 4, 7, 14, 19, 23, 28, 38, 41, 46, 76, 82, 92, 133, 161, 164, 266, 287, 322, 437, 532, 574, 644, 779, 874, 943, 1148, 1558, 1681, 1748, 1886, 3059, 3116, 3362, 3772, 5453, 6118, 6601, 6724, 10906, 11767, 12236, 13202, 17917, 21812, 23534, 26404, 31939, 35834, 38663, 47068, 63878, 71668, 77326, 125419, 127756, 154652, 223573, 250838, 270641, 447146, 501676, 541282, 734597, 894292, 1082564, 1469194, 2938388, 5142179, 10284358, 20568716]

約数ペア:

[(1, 20568716), (2, 10284358), (4, 5142179), (7, 2938388), (14, 1469194), (19, 1082564), (23, 894292), (28, 734597), (38, 541282), (41, 501676), (46, 447146), (76, 270641), (82, 250838), (92, 223573), (133, 154652), (161, 127756), (164, 125419), (266, 77326), (287, 71668), (322, 63878), (437, 47068), (532, 38663), (574, 35834), (644, 31939), (779, 26404), (874, 23534), (943, 21812), (1148, 17917), (1558, 13202), (1681, 12236), (1748, 11767), (1886, 10906), (3059, 6724), (3116, 6601), (3362, 6118), (3772, 5453)]