19986395

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{27953}}^1$

素因数の和:27982

約数の個数: 16

約数和(自身を含む): 28177632

約数和(自身を除く): 8191237

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 27953, 139765, 307483, 363389, 1537415, 1816945, 3997279, 19986395]

約数ペア:

[(1, 19986395), (5, 3997279), (11, 1816945), (13, 1537415), (55, 363389), (65, 307483), (143, 139765), (715, 27953)]