21515284

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{16349}}^1$

素因数の和:16407

約数の個数: 24

約数和(自身を含む): 43948800

約数和(自身を除く): 22433516

約数列:

[1, 2, 4, 7, 14, 28, 47, 94, 188, 329, 658, 1316, 16349, 32698, 65396, 114443, 228886, 457772, 768403, 1536806, 3073612, 5378821, 10757642, 21515284]

約数ペア:

[(1, 21515284), (2, 10757642), (4, 5378821), (7, 3073612), (14, 1536806), (28, 768403), (47, 457772), (94, 228886), (188, 114443), (329, 65396), (658, 32698), (1316, 16349)]