19948740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{47497}}^1$

素因数の和:47516

約数の個数: 48

約数和(自身を含む): 63837312

約数和(自身を除く): 43888572

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, 47497, 94994, 142491, 189988, 237485, 284982, 332479, 474970, 569964, 664958, 712455, 949940, 997437, 1329916, 1424910, 1662395, 1994874, 2849820, 3324790, 3989748, 4987185, 6649580, 9974370, 19948740]

約数ペア:

[(1, 19948740), (2, 9974370), (3, 6649580), (4, 4987185), (5, 3989748), (6, 3324790), (7, 2849820), (10, 1994874), (12, 1662395), (14, 1424910), (15, 1329916), (20, 997437), (21, 949940), (28, 712455), (30, 664958), (35, 569964), (42, 474970), (60, 332479), (70, 284982), (84, 237485), (105, 189988), (140, 142491), (210, 94994), (420, 47497)]