51513140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^2\times {\mathrm{199}}^1$

素因数の和:301

約数の個数: 72

約数和(自身を含む): 127209600

約数和(自身を除く): 75696460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 86, 140, 172, 199, 215, 301, 398, 430, 602, 796, 860, 995, 1204, 1393, 1505, 1849, 1990, 2786, 3010, 3698, 3980, 5572, 6020, 6965, 7396, 8557, 9245, 12943, 13930, 17114, 18490, 25886, 27860, 34228, 36980, 42785, 51772, 59899, 64715, 85570, 119798, 129430, 171140, 239596, 258860, 299495, 367951, 598990, 735902, 1197980, 1471804, 1839755, 2575657, 3679510, 5151314, 7359020, 10302628, 12878285, 25756570, 51513140]

約数ペア:

[(1, 51513140), (2, 25756570), (4, 12878285), (5, 10302628), (7, 7359020), (10, 5151314), (14, 3679510), (20, 2575657), (28, 1839755), (35, 1471804), (43, 1197980), (70, 735902), (86, 598990), (140, 367951), (172, 299495), (199, 258860), (215, 239596), (301, 171140), (398, 129430), (430, 119798), (602, 85570), (796, 64715), (860, 59899), (995, 51772), (1204, 42785), (1393, 36980), (1505, 34228), (1849, 27860), (1990, 25886), (2786, 18490), (3010, 17114), (3698, 13930), (3980, 12943), (5572, 9245), (6020, 8557), (6965, 7396)]