1218420420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{2901001}}^1$

素因数の和:2901020

約数の個数: 48

約数和(自身を含む): 3898946688

約数和(自身を除く): 2680526268

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, 2901001, 5802002, 8703003, 11604004, 14505005, 17406006, 20307007, 29010010, 34812012, 40614014, 43515015, 58020020, 60921021, 81228028, 87030030, 101535035, 121842042, 174060060, 203070070, 243684084, 304605105, 406140140, 609210210, 1218420420]

約数ペア:

[(1, 1218420420), (2, 609210210), (3, 406140140), (4, 304605105), (5, 243684084), (6, 203070070), (7, 174060060), (10, 121842042), (12, 101535035), (14, 87030030), (15, 81228028), (20, 60921021), (21, 58020020), (28, 43515015), (30, 40614014), (35, 34812012), (42, 29010010), (60, 20307007), (70, 17406006), (84, 14505005), (105, 11604004), (140, 8703003), (210, 5802002), (420, 2901001)]