21491632

素因数分解:

$2^4\times {\mathrm{643}}^1\times {\mathrm{2089}}^1$

素因数の和:2740

約数の個数: 20

約数和(自身を含む): 41724760

約数和(自身を除く): 20233128

約数列:

[1, 2, 4, 8, 16, 643, 1286, 2089, 2572, 4178, 5144, 8356, 10288, 16712, 33424, 1343227, 2686454, 5372908, 10745816, 21491632]

約数ペア:

[(1, 21491632), (2, 10745816), (4, 5372908), (8, 2686454), (16, 1343227), (643, 33424), (1286, 16712), (2089, 10288), (2572, 8356), (4178, 5144)]