21805316

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{3919}}^1$

素因数の和:4043

約数の個数: 24

約数和(自身を含む): 41489280

約数和(自身を除く): 19683964

約数列:

[1, 2, 4, 13, 26, 52, 107, 214, 428, 1391, 2782, 3919, 5564, 7838, 15676, 50947, 101894, 203788, 419333, 838666, 1677332, 5451329, 10902658, 21805316]

約数ペア:

[(1, 21805316), (2, 10902658), (4, 5451329), (13, 1677332), (26, 838666), (52, 419333), (107, 203788), (214, 101894), (428, 50947), (1391, 15676), (2782, 7838), (3919, 5564)]