12509140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{449}}^1$

素因数の和:664

約数の個数: 48

約数和(自身を含む): 30240000

約数和(自身を除く): 17730860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 199, 398, 449, 796, 898, 995, 1393, 1796, 1990, 2245, 2786, 3143, 3980, 4490, 5572, 6286, 6965, 8980, 12572, 13930, 15715, 27860, 31430, 62860, 89351, 178702, 357404, 446755, 625457, 893510, 1250914, 1787020, 2501828, 3127285, 6254570, 12509140]

約数ペア:

[(1, 12509140), (2, 6254570), (4, 3127285), (5, 2501828), (7, 1787020), (10, 1250914), (14, 893510), (20, 625457), (28, 446755), (35, 357404), (70, 178702), (140, 89351), (199, 62860), (398, 31430), (449, 27860), (796, 15715), (898, 13930), (995, 12572), (1393, 8980), (1796, 6965), (1990, 6286), (2245, 5572), (2786, 4490), (3143, 3980)]