207688740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{494497}}^1$

素因数の和:494516

約数の個数: 48

約数和(自身を含む): 664605312

約数和(自身を除く): 456916572

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, 494497, 988994, 1483491, 1977988, 2472485, 2966982, 3461479, 4944970, 5933964, 6922958, 7417455, 9889940, 10384437, 13845916, 14834910, 17307395, 20768874, 29669820, 34614790, 41537748, 51922185, 69229580, 103844370, 207688740]

約数ペア:

[(1, 207688740), (2, 103844370), (3, 69229580), (4, 51922185), (5, 41537748), (6, 34614790), (7, 29669820), (10, 20768874), (12, 17307395), (14, 14834910), (15, 13845916), (20, 10384437), (21, 9889940), (28, 7417455), (30, 6922958), (35, 5933964), (42, 4944970), (60, 3461479), (70, 2966982), (84, 2472485), (105, 1977988), (140, 1483491), (210, 988994), (420, 494497)]