21639368

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{159113}}^1$

素因数の和:159136

約数の個数: 16

約数和(自身を含む): 42960780

約数和(自身を除く): 21321412

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 159113, 318226, 636452, 1272904, 2704921, 5409842, 10819684, 21639368]

約数ペア:

[(1, 21639368), (2, 10819684), (4, 5409842), (8, 2704921), (17, 1272904), (34, 636452), (68, 318226), (136, 159113)]