21417669

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{379}}^1$

素因数の和:431

約数の個数: 64

約数和(自身を含む): 40857600

約数和(自身を除く): 19439931

約数列:

[1, 3, 7, 9, 13, 21, 23, 27, 39, 63, 69, 91, 117, 161, 189, 207, 273, 299, 351, 379, 483, 621, 819, 897, 1137, 1449, 2093, 2457, 2653, 2691, 3411, 4347, 4927, 6279, 7959, 8073, 8717, 10233, 14781, 18837, 23877, 26151, 34489, 44343, 56511, 61019, 71631, 78453, 103467, 113321, 133029, 183057, 235359, 310401, 339963, 549171, 793247, 931203, 1019889, 1647513, 2379741, 3059667, 7139223, 21417669]

約数ペア:

[(1, 21417669), (3, 7139223), (7, 3059667), (9, 2379741), (13, 1647513), (21, 1019889), (23, 931203), (27, 793247), (39, 549171), (63, 339963), (69, 310401), (91, 235359), (117, 183057), (161, 133029), (189, 113321), (207, 103467), (273, 78453), (299, 71631), (351, 61019), (379, 56511), (483, 44343), (621, 34489), (819, 26151), (897, 23877), (1137, 18837), (1449, 14781), (2093, 10233), (2457, 8717), (2653, 8073), (2691, 7959), (3411, 6279), (4347, 4927)]