21648564

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{271}}^1\times {\mathrm{317}}^1$

素因数の和:605

約数の個数: 72

約数和(自身を含む): 62969088

約数和(自身を除く): 41320524

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 271, 317, 542, 634, 813, 951, 1084, 1268, 1626, 1897, 1902, 2219, 2439, 2853, 3252, 3794, 3804, 4438, 4878, 5691, 5706, 6657, 7588, 8876, 9756, 11382, 11412, 13314, 17073, 19971, 22764, 26628, 34146, 39942, 68292, 79884, 85907, 171814, 257721, 343628, 515442, 601349, 773163, 1030884, 1202698, 1546326, 1804047, 2405396, 3092652, 3608094, 5412141, 7216188, 10824282, 21648564]

約数ペア:

[(1, 21648564), (2, 10824282), (3, 7216188), (4, 5412141), (6, 3608094), (7, 3092652), (9, 2405396), (12, 1804047), (14, 1546326), (18, 1202698), (21, 1030884), (28, 773163), (36, 601349), (42, 515442), (63, 343628), (84, 257721), (126, 171814), (252, 85907), (271, 79884), (317, 68292), (542, 39942), (634, 34146), (813, 26628), (951, 22764), (1084, 19971), (1268, 17073), (1626, 13314), (1897, 11412), (1902, 11382), (2219, 9756), (2439, 8876), (2853, 7588), (3252, 6657), (3794, 5706), (3804, 5691), (4438, 4878)]