12785905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1$

素因数の和:217

約数の個数: 32

約数和(自身を含む): 17641728

約数和(自身を除く): 4855823

約数列:

[1, 5, 11, 37, 55, 61, 103, 185, 305, 407, 515, 671, 1133, 2035, 2257, 3355, 3811, 5665, 6283, 11285, 19055, 24827, 31415, 41921, 69113, 124135, 209605, 232471, 345565, 1162355, 2557181, 12785905]

約数ペア:

[(1, 12785905), (5, 2557181), (11, 1162355), (37, 345565), (55, 232471), (61, 209605), (103, 124135), (185, 69113), (305, 41921), (407, 31415), (515, 24827), (671, 19055), (1133, 11285), (2035, 6283), (2257, 5665), (3355, 3811)]