128961819

素因数分解:

$3^2\times 7^1\times {\mathrm{1303}}^1\times {\mathrm{1571}}^1$

素因数の和:2887

約数の個数: 24

約数和(自身を含む): 213188352

約数和(自身を除く): 84226533

約数列:

[1, 3, 7, 9, 21, 63, 1303, 1571, 3909, 4713, 9121, 10997, 11727, 14139, 27363, 32991, 82089, 98973, 2047013, 6141039, 14329091, 18423117, 42987273, 128961819]

約数ペア:

[(1, 128961819), (3, 42987273), (7, 18423117), (9, 14329091), (21, 6141039), (63, 2047013), (1303, 98973), (1571, 82089), (3909, 32991), (4713, 27363), (9121, 14139), (10997, 11727)]