20512505405

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{811}}^1\times {\mathrm{42509}}^1$

素因数の和:43349

約数の個数: 32

約数和(自身を含む): 29823655680

約数和(自身を除く): 9311150275

約数列:

[1, 5, 7, 17, 35, 85, 119, 595, 811, 4055, 5677, 13787, 28385, 42509, 68935, 96509, 212545, 297563, 482545, 722653, 1487815, 3613265, 5058571, 25292855, 34474799, 172373995, 241323593, 586071583, 1206617965, 2930357915, 4102501081, 20512505405]

約数ペア:

[(1, 20512505405), (5, 4102501081), (7, 2930357915), (17, 1206617965), (35, 586071583), (85, 241323593), (119, 172373995), (595, 34474799), (811, 25292855), (4055, 5058571), (5677, 3613265), (13787, 1487815), (28385, 722653), (42509, 482545), (68935, 297563), (96509, 212545)]