344820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{821}}^1$

素因数の和:840

約数の個数: 48

約数和(自身を含む): 1104768

約数和(自身を除く): 759948

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 821, 1642, 2463, 3284, 4105, 4926, 5747, 8210, 9852, 11494, 12315, 16420, 17241, 22988, 24630, 28735, 34482, 49260, 57470, 68964, 86205, 114940, 172410, 344820]

約数ペア:

[(1, 344820), (2, 172410), (3, 114940), (4, 86205), (5, 68964), (6, 57470), (7, 49260), (10, 34482), (12, 28735), (14, 24630), (15, 22988), (20, 17241), (21, 16420), (28, 12315), (30, 11494), (35, 9852), (42, 8210), (60, 5747), (70, 4926), (84, 4105), (105, 3284), (140, 2463), (210, 1642), (420, 821)]