2015020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{389}}^1$

素因数の和:442

約数の個数: 48

約数和(自身を含む): 4979520

約数和(自身を除く): 2964500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 70, 74, 140, 148, 185, 259, 370, 389, 518, 740, 778, 1036, 1295, 1556, 1945, 2590, 2723, 3890, 5180, 5446, 7780, 10892, 13615, 14393, 27230, 28786, 54460, 57572, 71965, 100751, 143930, 201502, 287860, 403004, 503755, 1007510, 2015020]

約数ペア:

[(1, 2015020), (2, 1007510), (4, 503755), (5, 403004), (7, 287860), (10, 201502), (14, 143930), (20, 100751), (28, 71965), (35, 57572), (37, 54460), (70, 28786), (74, 27230), (140, 14393), (148, 13615), (185, 10892), (259, 7780), (370, 5446), (389, 5180), (518, 3890), (740, 2723), (778, 2590), (1036, 1945), (1295, 1556)]