20377216

素因数分解:

$2^7\times {\mathrm{397}}^1\times {\mathrm{401}}^1$

素因数の和:812

約数の個数: 32

約数和(自身を含む): 40798980

約数和(自身を除く): 20421764

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 397, 401, 794, 802, 1588, 1604, 3176, 3208, 6352, 6416, 12704, 12832, 25408, 25664, 50816, 51328, 159197, 318394, 636788, 1273576, 2547152, 5094304, 10188608, 20377216]

約数ペア:

[(1, 20377216), (2, 10188608), (4, 5094304), (8, 2547152), (16, 1273576), (32, 636788), (64, 318394), (128, 159197), (397, 51328), (401, 50816), (794, 25664), (802, 25408), (1588, 12832), (1604, 12704), (3176, 6416), (3208, 6352)]