66648880

素因数分解:

$2^4\times 5^1\times {\mathrm{457}}^1\times {\mathrm{1823}}^1$

素因数の和:2293

約数の個数: 40

約数和(自身を含む): 155382912

約数和(自身を除く): 88734032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 457, 914, 1823, 1828, 2285, 3646, 3656, 4570, 7292, 7312, 9115, 9140, 14584, 18230, 18280, 29168, 36460, 36560, 72920, 145840, 833111, 1666222, 3332444, 4165555, 6664888, 8331110, 13329776, 16662220, 33324440, 66648880]

約数ペア:

[(1, 66648880), (2, 33324440), (4, 16662220), (5, 13329776), (8, 8331110), (10, 6664888), (16, 4165555), (20, 3332444), (40, 1666222), (80, 833111), (457, 145840), (914, 72920), (1823, 36560), (1828, 36460), (2285, 29168), (3646, 18280), (3656, 18230), (4570, 14584), (7292, 9140), (7312, 9115)]