20180860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{3067}}^1$

素因数の和:3130

約数の個数: 48

約数和(自身を含む): 49480704

約数和(自身を除く): 29299844

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 70, 94, 140, 188, 235, 329, 470, 658, 940, 1316, 1645, 3067, 3290, 6134, 6580, 12268, 15335, 21469, 30670, 42938, 61340, 85876, 107345, 144149, 214690, 288298, 429380, 576596, 720745, 1009043, 1441490, 2018086, 2882980, 4036172, 5045215, 10090430, 20180860]

約数ペア:

[(1, 20180860), (2, 10090430), (4, 5045215), (5, 4036172), (7, 2882980), (10, 2018086), (14, 1441490), (20, 1009043), (28, 720745), (35, 576596), (47, 429380), (70, 288298), (94, 214690), (140, 144149), (188, 107345), (235, 85876), (329, 61340), (470, 42938), (658, 30670), (940, 21469), (1316, 15335), (1645, 12268), (3067, 6580), (3290, 6134)]