20456716

素因数分解:

$2^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:167

約数の個数: 72

約数和(自身を含む): 44528400

約数和(自身を除く): 24071684

約数列:

[1, 2, 4, 7, 14, 28, 29, 49, 58, 59, 61, 98, 116, 118, 122, 196, 203, 236, 244, 406, 413, 427, 812, 826, 854, 1421, 1652, 1708, 1711, 1769, 2842, 2891, 2989, 3422, 3538, 3599, 5684, 5782, 5978, 6844, 7076, 7198, 11564, 11956, 11977, 12383, 14396, 23954, 24766, 25193, 47908, 49532, 50386, 83839, 86681, 100772, 104371, 167678, 173362, 176351, 208742, 335356, 346724, 352702, 417484, 705404, 730597, 1461194, 2922388, 5114179, 10228358, 20456716]

約数ペア:

[(1, 20456716), (2, 10228358), (4, 5114179), (7, 2922388), (14, 1461194), (28, 730597), (29, 705404), (49, 417484), (58, 352702), (59, 346724), (61, 335356), (98, 208742), (116, 176351), (118, 173362), (122, 167678), (196, 104371), (203, 100772), (236, 86681), (244, 83839), (406, 50386), (413, 49532), (427, 47908), (812, 25193), (826, 24766), (854, 23954), (1421, 14396), (1652, 12383), (1708, 11977), (1711, 11956), (1769, 11564), (2842, 7198), (2891, 7076), (2989, 6844), (3422, 5978), (3538, 5782), (3599, 5684)]