20151856

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{439}}^1$

素因数の和:617

約数の個数: 40

約数和(自身を含む): 41465600

約数和(自身を除く): 21313744

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 151, 152, 302, 304, 439, 604, 878, 1208, 1756, 2416, 2869, 3512, 5738, 7024, 8341, 11476, 16682, 22952, 33364, 45904, 66289, 66728, 132578, 133456, 265156, 530312, 1060624, 1259491, 2518982, 5037964, 10075928, 20151856]

約数ペア:

[(1, 20151856), (2, 10075928), (4, 5037964), (8, 2518982), (16, 1259491), (19, 1060624), (38, 530312), (76, 265156), (151, 133456), (152, 132578), (302, 66728), (304, 66289), (439, 45904), (604, 33364), (878, 22952), (1208, 16682), (1756, 11476), (2416, 8341), (2869, 7024), (3512, 5738)]