18017516

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 35925120

約数和(自身を除く): 17907604

約数列:

[1, 2, 4, 11, 22, 43, 44, 86, 89, 107, 172, 178, 214, 356, 428, 473, 946, 979, 1177, 1892, 1958, 2354, 3827, 3916, 4601, 4708, 7654, 9202, 9523, 15308, 18404, 19046, 38092, 42097, 50611, 84194, 101222, 104753, 168388, 202444, 209506, 409489, 419012, 818978, 1637956, 4504379, 9008758, 18017516]

約数ペア:

[(1, 18017516), (2, 9008758), (4, 4504379), (11, 1637956), (22, 818978), (43, 419012), (44, 409489), (86, 209506), (89, 202444), (107, 168388), (172, 104753), (178, 101222), (214, 84194), (356, 50611), (428, 42097), (473, 38092), (946, 19046), (979, 18404), (1177, 15308), (1892, 9523), (1958, 9202), (2354, 7654), (3827, 4708), (3916, 4601)]