21695704

素因数分解:

$2^3\times {\mathrm{401}}^1\times {\mathrm{6763}}^1$

素因数の和:7170

約数の個数: 16

約数和(自身を含む): 40786920

約数和(自身を除く): 19091216

約数列:

[1, 2, 4, 8, 401, 802, 1604, 3208, 6763, 13526, 27052, 54104, 2711963, 5423926, 10847852, 21695704]

約数ペア:

[(1, 21695704), (2, 10847852), (4, 5423926), (8, 2711963), (401, 54104), (802, 27052), (1604, 13526), (3208, 6763)]