21584920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{607}}^1$

素因数の和:752

約数の個数: 64

約数和(自身を含む): 56033280

約数和(自身を除く): 34448360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 127, 140, 254, 280, 508, 607, 635, 889, 1016, 1214, 1270, 1778, 2428, 2540, 3035, 3556, 4249, 4445, 4856, 5080, 6070, 7112, 8498, 8890, 12140, 16996, 17780, 21245, 24280, 33992, 35560, 42490, 77089, 84980, 154178, 169960, 308356, 385445, 539623, 616712, 770890, 1079246, 1541780, 2158492, 2698115, 3083560, 4316984, 5396230, 10792460, 21584920]

約数ペア:

[(1, 21584920), (2, 10792460), (4, 5396230), (5, 4316984), (7, 3083560), (8, 2698115), (10, 2158492), (14, 1541780), (20, 1079246), (28, 770890), (35, 616712), (40, 539623), (56, 385445), (70, 308356), (127, 169960), (140, 154178), (254, 84980), (280, 77089), (508, 42490), (607, 35560), (635, 33992), (889, 24280), (1016, 21245), (1214, 17780), (1270, 16996), (1778, 12140), (2428, 8890), (2540, 8498), (3035, 7112), (3556, 6070), (4249, 5080), (4445, 4856)]