30990760

素因数分解:

$2^3\times 5^1\times {\mathrm{277}}^1\times {\mathrm{2797}}^1$

素因数の和:3085

約数の個数: 32

約数和(自身を含む): 70005960

約数和(自身を除く): 39015200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 277, 554, 1108, 1385, 2216, 2770, 2797, 5540, 5594, 11080, 11188, 13985, 22376, 27970, 55940, 111880, 774769, 1549538, 3099076, 3873845, 6198152, 7747690, 15495380, 30990760]

約数ペア:

[(1, 30990760), (2, 15495380), (4, 7747690), (5, 6198152), (8, 3873845), (10, 3099076), (20, 1549538), (40, 774769), (277, 111880), (554, 55940), (1108, 27970), (1385, 22376), (2216, 13985), (2770, 11188), (2797, 11080), (5540, 5594)]