320089640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{615557}}^1$

素因数の和:615581

約数の個数: 32

約数和(自身を含む): 775603080

約数和(自身を除く): 455513440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 615557, 1231114, 2462228, 3077785, 4924456, 6155570, 8002241, 12311140, 16004482, 24622280, 32008964, 40011205, 64017928, 80022410, 160044820, 320089640]

約数ペア:

[(1, 320089640), (2, 160044820), (4, 80022410), (5, 64017928), (8, 40011205), (10, 32008964), (13, 24622280), (20, 16004482), (26, 12311140), (40, 8002241), (52, 6155570), (65, 4924456), (104, 3077785), (130, 2462228), (260, 1231114), (520, 615557)]