21013456

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{12049}}^1$

素因数の和:12166

約数の個数: 20

約数和(自身を含む): 41090500

約数和(自身を除く): 20077044

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 12049, 24098, 48196, 96392, 192784, 1313341, 2626682, 5253364, 10506728, 21013456]

約数ペア:

[(1, 21013456), (2, 10506728), (4, 5253364), (8, 2626682), (16, 1313341), (109, 192784), (218, 96392), (436, 48196), (872, 24098), (1744, 12049)]