19903920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{239}}^1\times {\mathrm{347}}^1$

素因数の和:602

約数の個数: 80

約数和(自身を含む): 62138880

約数和(自身を除く): 42234960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 239, 240, 347, 478, 694, 717, 956, 1041, 1195, 1388, 1434, 1735, 1912, 2082, 2390, 2776, 2868, 3470, 3585, 3824, 4164, 4780, 5205, 5552, 5736, 6940, 7170, 8328, 9560, 10410, 11472, 13880, 14340, 16656, 19120, 20820, 27760, 28680, 41640, 57360, 82933, 83280, 165866, 248799, 331732, 414665, 497598, 663464, 829330, 995196, 1243995, 1326928, 1658660, 1990392, 2487990, 3317320, 3980784, 4975980, 6634640, 9951960, 19903920]

約数ペア:

[(1, 19903920), (2, 9951960), (3, 6634640), (4, 4975980), (5, 3980784), (6, 3317320), (8, 2487990), (10, 1990392), (12, 1658660), (15, 1326928), (16, 1243995), (20, 995196), (24, 829330), (30, 663464), (40, 497598), (48, 414665), (60, 331732), (80, 248799), (120, 165866), (239, 83280), (240, 82933), (347, 57360), (478, 41640), (694, 28680), (717, 27760), (956, 20820), (1041, 19120), (1195, 16656), (1388, 14340), (1434, 13880), (1735, 11472), (1912, 10410), (2082, 9560), (2390, 8328), (2776, 7170), (2868, 6940), (3470, 5736), (3585, 5552), (3824, 5205), (4164, 4780)]