218480360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{780287}}^1$

素因数の和:780305

約数の個数: 32

約数和(自身を含む): 561807360

約数和(自身を除く): 343327000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 780287, 1560574, 3121148, 3901435, 5462009, 6242296, 7802870, 10924018, 15605740, 21848036, 27310045, 31211480, 43696072, 54620090, 109240180, 218480360]

約数ペア:

[(1, 218480360), (2, 109240180), (4, 54620090), (5, 43696072), (7, 31211480), (8, 27310045), (10, 21848036), (14, 15605740), (20, 10924018), (28, 7802870), (35, 6242296), (40, 5462009), (56, 3901435), (70, 3121148), (140, 1560574), (280, 780287)]