12665720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{7723}}^1$

素因数の和:7775

約数の個数: 32

約数和(自身を含む): 29196720

約数和(自身を除く): 16531000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 7723, 15446, 30892, 38615, 61784, 77230, 154460, 308920, 316643, 633286, 1266572, 1583215, 2533144, 3166430, 6332860, 12665720]

約数ペア:

[(1, 12665720), (2, 6332860), (4, 3166430), (5, 2533144), (8, 1583215), (10, 1266572), (20, 633286), (40, 316643), (41, 308920), (82, 154460), (164, 77230), (205, 61784), (328, 38615), (410, 30892), (820, 15446), (1640, 7723)]