20800360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{74287}}^1$

素因数の和:74305

約数の個数: 32

約数和(自身を含む): 53487360

約数和(自身を除く): 32687000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 74287, 148574, 297148, 371435, 520009, 594296, 742870, 1040018, 1485740, 2080036, 2600045, 2971480, 4160072, 5200090, 10400180, 20800360]

約数ペア:

[(1, 20800360), (2, 10400180), (4, 5200090), (5, 4160072), (7, 2971480), (8, 2600045), (10, 2080036), (14, 1485740), (20, 1040018), (28, 742870), (35, 594296), (40, 520009), (56, 371435), (70, 297148), (140, 148574), (280, 74287)]