19987020

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{37013}}^1$

素因数の和:37031

約数の個数: 48

約数和(自身を含む): 62183520

約数和(自身を除く): 42196500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 37013, 74026, 111039, 148052, 185065, 222078, 333117, 370130, 444156, 555195, 666234, 740260, 999351, 1110390, 1332468, 1665585, 1998702, 2220780, 3331170, 3997404, 4996755, 6662340, 9993510, 19987020]

約数ペア:

[(1, 19987020), (2, 9993510), (3, 6662340), (4, 4996755), (5, 3997404), (6, 3331170), (9, 2220780), (10, 1998702), (12, 1665585), (15, 1332468), (18, 1110390), (20, 999351), (27, 740260), (30, 666234), (36, 555195), (45, 444156), (54, 370130), (60, 333117), (90, 222078), (108, 185065), (135, 148052), (180, 111039), (270, 74026), (540, 37013)]