31439240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{2389}}^1$

素因数の和:2454

約数の個数: 64

約数和(自身を含む): 82598400

約数和(自身を除く): 51159160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 47, 56, 70, 94, 140, 188, 235, 280, 329, 376, 470, 658, 940, 1316, 1645, 1880, 2389, 2632, 3290, 4778, 6580, 9556, 11945, 13160, 16723, 19112, 23890, 33446, 47780, 66892, 83615, 95560, 112283, 133784, 167230, 224566, 334460, 449132, 561415, 668920, 785981, 898264, 1122830, 1571962, 2245660, 3143924, 3929905, 4491320, 6287848, 7859810, 15719620, 31439240]

約数ペア:

[(1, 31439240), (2, 15719620), (4, 7859810), (5, 6287848), (7, 4491320), (8, 3929905), (10, 3143924), (14, 2245660), (20, 1571962), (28, 1122830), (35, 898264), (40, 785981), (47, 668920), (56, 561415), (70, 449132), (94, 334460), (140, 224566), (188, 167230), (235, 133784), (280, 112283), (329, 95560), (376, 83615), (470, 66892), (658, 47780), (940, 33446), (1316, 23890), (1645, 19112), (1880, 16723), (2389, 13160), (2632, 11945), (3290, 9556), (4778, 6580)]