21079404

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{331}}^1$

素因数の和:431

約数の個数: 72

約数和(自身を含む): 56194320

約数和(自身を除く): 35114916

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 36, 58, 61, 87, 116, 122, 174, 183, 244, 261, 331, 348, 366, 522, 549, 662, 732, 993, 1044, 1098, 1324, 1769, 1986, 2196, 2979, 3538, 3972, 5307, 5958, 7076, 9599, 10614, 11916, 15921, 19198, 20191, 21228, 28797, 31842, 38396, 40382, 57594, 60573, 63684, 80764, 86391, 115188, 121146, 172782, 181719, 242292, 345564, 363438, 585539, 726876, 1171078, 1756617, 2342156, 3513234, 5269851, 7026468, 10539702, 21079404]

約数ペア:

[(1, 21079404), (2, 10539702), (3, 7026468), (4, 5269851), (6, 3513234), (9, 2342156), (12, 1756617), (18, 1171078), (29, 726876), (36, 585539), (58, 363438), (61, 345564), (87, 242292), (116, 181719), (122, 172782), (174, 121146), (183, 115188), (244, 86391), (261, 80764), (331, 63684), (348, 60573), (366, 57594), (522, 40382), (549, 38396), (662, 31842), (732, 28797), (993, 21228), (1044, 20191), (1098, 19198), (1324, 15921), (1769, 11916), (1986, 10614), (2196, 9599), (2979, 7076), (3538, 5958), (3972, 5307)]