13428940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{193}}^1$

素因数の和:287

約数の個数: 72

約数和(自身を含む): 33439392

約数和(自身を除く): 20010452

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 71, 98, 140, 142, 193, 196, 245, 284, 355, 386, 490, 497, 710, 772, 965, 980, 994, 1351, 1420, 1930, 1988, 2485, 2702, 3479, 3860, 4970, 5404, 6755, 6958, 9457, 9940, 13510, 13703, 13916, 17395, 18914, 27020, 27406, 34790, 37828, 47285, 54812, 68515, 69580, 94570, 95921, 137030, 189140, 191842, 274060, 383684, 479605, 671447, 959210, 1342894, 1918420, 2685788, 3357235, 6714470, 13428940]

約数ペア:

[(1, 13428940), (2, 6714470), (4, 3357235), (5, 2685788), (7, 1918420), (10, 1342894), (14, 959210), (20, 671447), (28, 479605), (35, 383684), (49, 274060), (70, 191842), (71, 189140), (98, 137030), (140, 95921), (142, 94570), (193, 69580), (196, 68515), (245, 54812), (284, 47285), (355, 37828), (386, 34790), (490, 27406), (497, 27020), (710, 18914), (772, 17395), (965, 13916), (980, 13703), (994, 13510), (1351, 9940), (1420, 9457), (1930, 6958), (1988, 6755), (2485, 5404), (2702, 4970), (3479, 3860)]