90958780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{643}}^2$

素因数の和:1306

約数の個数: 36

約数和(自身を含む): 208702872

約数和(自身を除く): 117744092

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 643, 1286, 2572, 3215, 6430, 7073, 12860, 14146, 28292, 35365, 70730, 141460, 413449, 826898, 1653796, 2067245, 4134490, 4547939, 8268980, 9095878, 18191756, 22739695, 45479390, 90958780]

約数ペア:

[(1, 90958780), (2, 45479390), (4, 22739695), (5, 18191756), (10, 9095878), (11, 8268980), (20, 4547939), (22, 4134490), (44, 2067245), (55, 1653796), (110, 826898), (220, 413449), (643, 141460), (1286, 70730), (2572, 35365), (3215, 28292), (6430, 14146), (7073, 12860)]