12756980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{569}}^1$

素因数の和:656

約数の個数: 48

約数和(自身を含む): 28728000

約数和(自身を除く): 15971020

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 59, 76, 95, 118, 190, 236, 295, 380, 569, 590, 1121, 1138, 1180, 2242, 2276, 2845, 4484, 5605, 5690, 10811, 11210, 11380, 21622, 22420, 33571, 43244, 54055, 67142, 108110, 134284, 167855, 216220, 335710, 637849, 671420, 1275698, 2551396, 3189245, 6378490, 12756980]

約数ペア:

[(1, 12756980), (2, 6378490), (4, 3189245), (5, 2551396), (10, 1275698), (19, 671420), (20, 637849), (38, 335710), (59, 216220), (76, 167855), (95, 134284), (118, 108110), (190, 67142), (236, 54055), (295, 43244), (380, 33571), (569, 22420), (590, 21622), (1121, 11380), (1138, 11210), (1180, 10811), (2242, 5690), (2276, 5605), (2845, 4484)]