128420159

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{26321}}^1$

素因数の和:26386

約数の個数: 16

約数和(自身を含む): 159195456

約数和(自身を除く): 30775297

約数列:

[1, 7, 17, 41, 119, 287, 697, 4879, 26321, 184247, 447457, 1079161, 3132199, 7554127, 18345737, 128420159]

約数ペア:

[(1, 128420159), (7, 18345737), (17, 7554127), (41, 3132199), (119, 1079161), (287, 447457), (697, 184247), (4879, 26321)]