18717490

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{499}}^1$

素因数の和:559

約数の個数: 48

約数和(自身を含む): 38304000

約数和(自身を除く): 19586510

約数列:

[1, 2, 5, 10, 11, 22, 31, 55, 62, 110, 121, 155, 242, 310, 341, 499, 605, 682, 998, 1210, 1705, 2495, 3410, 3751, 4990, 5489, 7502, 10978, 15469, 18755, 27445, 30938, 37510, 54890, 60379, 77345, 120758, 154690, 170159, 301895, 340318, 603790, 850795, 1701590, 1871749, 3743498, 9358745, 18717490]

約数ペア:

[(1, 18717490), (2, 9358745), (5, 3743498), (10, 1871749), (11, 1701590), (22, 850795), (31, 603790), (55, 340318), (62, 301895), (110, 170159), (121, 154690), (155, 120758), (242, 77345), (310, 60379), (341, 54890), (499, 37510), (605, 30938), (682, 27445), (998, 18755), (1210, 15469), (1705, 10978), (2495, 7502), (3410, 5489), (3751, 4990)]