18837945

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{757}}^1$

素因数の和:854

約数の個数: 48

約数和(自身を含む): 37839360

約数和(自身を除く): 19001415

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 79, 105, 237, 315, 395, 553, 711, 757, 1185, 1659, 2271, 2765, 3555, 3785, 4977, 5299, 6813, 8295, 11355, 15897, 24885, 26495, 34065, 47691, 59803, 79485, 179409, 238455, 299015, 418621, 538227, 897045, 1255863, 2093105, 2691135, 3767589, 6279315, 18837945]

約数ペア:

[(1, 18837945), (3, 6279315), (5, 3767589), (7, 2691135), (9, 2093105), (15, 1255863), (21, 897045), (35, 538227), (45, 418621), (63, 299015), (79, 238455), (105, 179409), (237, 79485), (315, 59803), (395, 47691), (553, 34065), (711, 26495), (757, 24885), (1185, 15897), (1659, 11355), (2271, 8295), (2765, 6813), (3555, 5299), (3785, 4977)]