207740820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{494621}}^1$

素因数の和:494640

約数の個数: 48

約数和(自身を含む): 664771968

約数和(自身を除く): 457031148

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, 494621, 989242, 1483863, 1978484, 2473105, 2967726, 3462347, 4946210, 5935452, 6924694, 7419315, 9892420, 10387041, 13849388, 14838630, 17311735, 20774082, 29677260, 34623470, 41548164, 51935205, 69246940, 103870410, 207740820]

約数ペア:

[(1, 207740820), (2, 103870410), (3, 69246940), (4, 51935205), (5, 41548164), (6, 34623470), (7, 29677260), (10, 20774082), (12, 17311735), (14, 14838630), (15, 13849388), (20, 10387041), (21, 9892420), (28, 7419315), (30, 6924694), (35, 5935452), (42, 4946210), (60, 3462347), (70, 2967726), (84, 2473105), (105, 1978484), (140, 1483863), (210, 989242), (420, 494621)]