18209290

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{101}}^1\times {\mathrm{149}}^1$

素因数の和:279

約数の個数: 48

約数和(自身を含む): 36628200

約数和(自身を除く): 18418910

約数列:

[1, 2, 5, 10, 11, 22, 55, 101, 110, 121, 149, 202, 242, 298, 505, 605, 745, 1010, 1111, 1210, 1490, 1639, 2222, 3278, 5555, 8195, 11110, 12221, 15049, 16390, 18029, 24442, 30098, 36058, 61105, 75245, 90145, 122210, 150490, 165539, 180290, 331078, 827695, 1655390, 1820929, 3641858, 9104645, 18209290]

約数ペア:

[(1, 18209290), (2, 9104645), (5, 3641858), (10, 1820929), (11, 1655390), (22, 827695), (55, 331078), (101, 180290), (110, 165539), (121, 150490), (149, 122210), (202, 90145), (242, 75245), (298, 61105), (505, 36058), (605, 30098), (745, 24442), (1010, 18029), (1111, 16390), (1210, 15049), (1490, 12221), (1639, 11110), (2222, 8195), (3278, 5555)]