21262400

素因数分解:

$2^6\times 5^2\times {\mathrm{97}}^1\times {\mathrm{137}}^1$

素因数の和:256

約数の個数: 84

約数和(自身を含む): 53243988

約数和(自身を除く): 31981588

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 97, 100, 137, 160, 194, 200, 274, 320, 388, 400, 485, 548, 685, 776, 800, 970, 1096, 1370, 1552, 1600, 1940, 2192, 2425, 2740, 3104, 3425, 3880, 4384, 4850, 5480, 6208, 6850, 7760, 8768, 9700, 10960, 13289, 13700, 15520, 19400, 21920, 26578, 27400, 31040, 38800, 43840, 53156, 54800, 66445, 77600, 106312, 109600, 132890, 155200, 212624, 219200, 265780, 332225, 425248, 531560, 664450, 850496, 1063120, 1328900, 2126240, 2657800, 4252480, 5315600, 10631200, 21262400]

約数ペア:

[(1, 21262400), (2, 10631200), (4, 5315600), (5, 4252480), (8, 2657800), (10, 2126240), (16, 1328900), (20, 1063120), (25, 850496), (32, 664450), (40, 531560), (50, 425248), (64, 332225), (80, 265780), (97, 219200), (100, 212624), (137, 155200), (160, 132890), (194, 109600), (200, 106312), (274, 77600), (320, 66445), (388, 54800), (400, 53156), (485, 43840), (548, 38800), (685, 31040), (776, 27400), (800, 26578), (970, 21920), (1096, 19400), (1370, 15520), (1552, 13700), (1600, 13289), (1940, 10960), (2192, 9700), (2425, 8768), (2740, 7760), (3104, 6850), (3425, 6208), (3880, 5480), (4384, 4850)]