20945704

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{201401}}^1$

素因数の和:201420

約数の個数: 16

約数和(自身を含む): 42294420

約数和(自身を除く): 21348716

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 201401, 402802, 805604, 1611208, 2618213, 5236426, 10472852, 20945704]

約数ペア:

[(1, 20945704), (2, 10472852), (4, 5236426), (8, 2618213), (13, 1611208), (26, 805604), (52, 402802), (104, 201401)]