12757420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{353}}^1$

素因数の和:514

約数の個数: 48

約数和(自身を含む): 29141280

約数和(自身を除く): 16383860

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 139, 260, 278, 353, 556, 695, 706, 1390, 1412, 1765, 1807, 2780, 3530, 3614, 4589, 7060, 7228, 9035, 9178, 18070, 18356, 22945, 36140, 45890, 49067, 91780, 98134, 196268, 245335, 490670, 637871, 981340, 1275742, 2551484, 3189355, 6378710, 12757420]

約数ペア:

[(1, 12757420), (2, 6378710), (4, 3189355), (5, 2551484), (10, 1275742), (13, 981340), (20, 637871), (26, 490670), (52, 245335), (65, 196268), (130, 98134), (139, 91780), (260, 49067), (278, 45890), (353, 36140), (556, 22945), (695, 18356), (706, 18070), (1390, 9178), (1412, 9035), (1765, 7228), (1807, 7060), (2780, 4589), (3530, 3614)]