19020760

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{311}}^1$

素因数の和:472

約数の個数: 64

約数和(自身を含む): 47174400

約数和(自身を除く): 28153640

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 139, 220, 278, 311, 440, 556, 622, 695, 1112, 1244, 1390, 1529, 1555, 2488, 2780, 3058, 3110, 3421, 5560, 6116, 6220, 6842, 7645, 12232, 12440, 13684, 15290, 17105, 27368, 30580, 34210, 43229, 61160, 68420, 86458, 136840, 172916, 216145, 345832, 432290, 475519, 864580, 951038, 1729160, 1902076, 2377595, 3804152, 4755190, 9510380, 19020760]

約数ペア:

[(1, 19020760), (2, 9510380), (4, 4755190), (5, 3804152), (8, 2377595), (10, 1902076), (11, 1729160), (20, 951038), (22, 864580), (40, 475519), (44, 432290), (55, 345832), (88, 216145), (110, 172916), (139, 136840), (220, 86458), (278, 68420), (311, 61160), (440, 43229), (556, 34210), (622, 30580), (695, 27368), (1112, 17105), (1244, 15290), (1390, 13684), (1529, 12440), (1555, 12232), (2488, 7645), (2780, 6842), (3058, 6220), (3110, 6116), (3421, 5560)]