1329640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2557}}^1$

素因数の和:2581

約数の個数: 32

約数和(自身を含む): 3223080

約数和(自身を除く): 1893440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 2557, 5114, 10228, 12785, 20456, 25570, 33241, 51140, 66482, 102280, 132964, 166205, 265928, 332410, 664820, 1329640]

約数ペア:

[(1, 1329640), (2, 664820), (4, 332410), (5, 265928), (8, 166205), (10, 132964), (13, 102280), (20, 66482), (26, 51140), (40, 33241), (52, 25570), (65, 20456), (104, 12785), (130, 10228), (260, 5114), (520, 2557)]