21684978

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{2917}}^1$

素因数の和:2991

約数の個数: 48

約数和(自身を含む): 54624960

約数和(自身を除く): 32939982

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 59, 63, 118, 126, 177, 354, 413, 531, 826, 1062, 1239, 2478, 2917, 3717, 5834, 7434, 8751, 17502, 20419, 26253, 40838, 52506, 61257, 122514, 172103, 183771, 344206, 367542, 516309, 1032618, 1204721, 1548927, 2409442, 3097854, 3614163, 7228326, 10842489, 21684978]

約数ペア:

[(1, 21684978), (2, 10842489), (3, 7228326), (6, 3614163), (7, 3097854), (9, 2409442), (14, 1548927), (18, 1204721), (21, 1032618), (42, 516309), (59, 367542), (63, 344206), (118, 183771), (126, 172103), (177, 122514), (354, 61257), (413, 52506), (531, 40838), (826, 26253), (1062, 20419), (1239, 17502), (2478, 8751), (2917, 7434), (3717, 5834)]