2019905840

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{389}}^1\times {\mathrm{1381}}^1$

素因数の和:1830

約数の個数: 80

約数和(自身を含む): 4812013440

約数和(自身を除く): 2792107600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 389, 470, 752, 778, 940, 1381, 1556, 1880, 1945, 2762, 3112, 3760, 3890, 5524, 6224, 6905, 7780, 11048, 13810, 15560, 18283, 22096, 27620, 31120, 36566, 55240, 64907, 73132, 91415, 110480, 129814, 146264, 182830, 259628, 292528, 324535, 365660, 519256, 537209, 649070, 731320, 1038512, 1074418, 1298140, 1462640, 2148836, 2596280, 2686045, 4297672, 5192560, 5372090, 8595344, 10744180, 21488360, 25248823, 42976720, 50497646, 100995292, 126244115, 201990584, 252488230, 403981168, 504976460, 1009952920, 2019905840]

約数ペア:

[(1, 2019905840), (2, 1009952920), (4, 504976460), (5, 403981168), (8, 252488230), (10, 201990584), (16, 126244115), (20, 100995292), (40, 50497646), (47, 42976720), (80, 25248823), (94, 21488360), (188, 10744180), (235, 8595344), (376, 5372090), (389, 5192560), (470, 4297672), (752, 2686045), (778, 2596280), (940, 2148836), (1381, 1462640), (1556, 1298140), (1880, 1074418), (1945, 1038512), (2762, 731320), (3112, 649070), (3760, 537209), (3890, 519256), (5524, 365660), (6224, 324535), (6905, 292528), (7780, 259628), (11048, 182830), (13810, 146264), (15560, 129814), (18283, 110480), (22096, 91415), (27620, 73132), (31120, 64907), (36566, 55240)]