25189820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{439}}^1$

素因数の和:618

約数の個数: 48

約数和(自身を含む): 56179200

約数和(自身を除く): 30989380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 151, 190, 302, 380, 439, 604, 755, 878, 1510, 1756, 2195, 2869, 3020, 4390, 5738, 8341, 8780, 11476, 14345, 16682, 28690, 33364, 41705, 57380, 66289, 83410, 132578, 166820, 265156, 331445, 662890, 1259491, 1325780, 2518982, 5037964, 6297455, 12594910, 25189820]

約数ペア:

[(1, 25189820), (2, 12594910), (4, 6297455), (5, 5037964), (10, 2518982), (19, 1325780), (20, 1259491), (38, 662890), (76, 331445), (95, 265156), (151, 166820), (190, 132578), (302, 83410), (380, 66289), (439, 57380), (604, 41705), (755, 33364), (878, 28690), (1510, 16682), (1756, 14345), (2195, 11476), (2869, 8780), (3020, 8341), (4390, 5738)]