640360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{2287}}^1$

素因数の和:2305

約数の個数: 32

約数和(自身を含む): 1647360

約数和(自身を除く): 1007000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 2287, 4574, 9148, 11435, 16009, 18296, 22870, 32018, 45740, 64036, 80045, 91480, 128072, 160090, 320180, 640360]

約数ペア:

[(1, 640360), (2, 320180), (4, 160090), (5, 128072), (7, 91480), (8, 80045), (10, 64036), (14, 45740), (20, 32018), (28, 22870), (35, 18296), (40, 16009), (56, 11435), (70, 9148), (140, 4574), (280, 2287)]