21755600

素因数分解:

$2^4\times 5^2\times {\mathrm{137}}^1\times {\mathrm{397}}^1$

素因数の和:552

約数の個数: 60

約数和(自身を含む): 52781964

約数和(自身を除く): 31026364

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 137, 200, 274, 397, 400, 548, 685, 794, 1096, 1370, 1588, 1985, 2192, 2740, 3176, 3425, 3970, 5480, 6352, 6850, 7940, 9925, 10960, 13700, 15880, 19850, 27400, 31760, 39700, 54389, 54800, 79400, 108778, 158800, 217556, 271945, 435112, 543890, 870224, 1087780, 1359725, 2175560, 2719450, 4351120, 5438900, 10877800, 21755600]

約数ペア:

[(1, 21755600), (2, 10877800), (4, 5438900), (5, 4351120), (8, 2719450), (10, 2175560), (16, 1359725), (20, 1087780), (25, 870224), (40, 543890), (50, 435112), (80, 271945), (100, 217556), (137, 158800), (200, 108778), (274, 79400), (397, 54800), (400, 54389), (548, 39700), (685, 31760), (794, 27400), (1096, 19850), (1370, 15880), (1588, 13700), (1985, 10960), (2192, 9925), (2740, 7940), (3176, 6850), (3425, 6352), (3970, 5480)]