257903451

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{21401}}^1$

素因数の和:21523

約数の個数: 24

約数和(自身を含む): 405097056

約数和(自身を除く): 147193605

約数列:

[1, 3, 9, 13, 39, 103, 117, 309, 927, 1339, 4017, 12051, 21401, 64203, 192609, 278213, 834639, 2204303, 2503917, 6612909, 19838727, 28655939, 85967817, 257903451]

約数ペア:

[(1, 257903451), (3, 85967817), (9, 28655939), (13, 19838727), (39, 6612909), (103, 2503917), (117, 2204303), (309, 834639), (927, 278213), (1339, 192609), (4017, 64203), (12051, 21401)]