205543380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{489389}}^1$

素因数の和:489408

約数の個数: 48

約数和(自身を含む): 657740160

約数和(自身を除く): 452196780

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 489389, 978778, 1468167, 1957556, 2446945, 2936334, 3425723, 4893890, 5872668, 6851446, 7340835, 9787780, 10277169, 13702892, 14681670, 17128615, 20554338, 29363340, 34257230, 41108676, 51385845, 68514460, 102771690, 205543380]

約数ペア:

[(1, 205543380), (2, 102771690), (3, 68514460), (4, 51385845), (5, 41108676), (6, 34257230), (7, 29363340), (10, 20554338), (12, 17128615), (14, 14681670), (15, 13702892), (20, 10277169), (21, 9787780), (28, 7340835), (30, 6851446), (35, 5872668), (42, 4893890), (60, 3425723), (70, 2936334), (84, 2446945), (105, 1957556), (140, 1468167), (210, 978778), (420, 489389)]