21695216

素因数分解:

$2^4\times {\mathrm{197}}^1\times {\mathrm{6883}}^1$

素因数の和:7088

約数の個数: 20

約数和(自身を含む): 42253992

約数和(自身を除く): 20558776

約数列:

[1, 2, 4, 8, 16, 197, 394, 788, 1576, 3152, 6883, 13766, 27532, 55064, 110128, 1355951, 2711902, 5423804, 10847608, 21695216]

約数ペア:

[(1, 21695216), (2, 10847608), (4, 5423804), (8, 2711902), (16, 1355951), (197, 110128), (394, 55064), (788, 27532), (1576, 13766), (3152, 6883)]