20749980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{239}}^1\times {\mathrm{1447}}^1$

素因数の和:1698

約数の個数: 48

約数和(自身を含む): 58383360

約数和(自身を除く): 37633380

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 239, 478, 717, 956, 1195, 1434, 1447, 2390, 2868, 2894, 3585, 4341, 4780, 5788, 7170, 7235, 8682, 14340, 14470, 17364, 21705, 28940, 43410, 86820, 345833, 691666, 1037499, 1383332, 1729165, 2074998, 3458330, 4149996, 5187495, 6916660, 10374990, 20749980]

約数ペア:

[(1, 20749980), (2, 10374990), (3, 6916660), (4, 5187495), (5, 4149996), (6, 3458330), (10, 2074998), (12, 1729165), (15, 1383332), (20, 1037499), (30, 691666), (60, 345833), (239, 86820), (478, 43410), (717, 28940), (956, 21705), (1195, 17364), (1434, 14470), (1447, 14340), (2390, 8682), (2868, 7235), (2894, 7170), (3585, 5788), (4341, 4780)]