21993584

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{12611}}^1$

素因数の和:12728

約数の個数: 20

約数和(自身を含む): 43006920

約数和(自身を除く): 21013336

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 12611, 25222, 50444, 100888, 201776, 1374599, 2749198, 5498396, 10996792, 21993584]

約数ペア:

[(1, 21993584), (2, 10996792), (4, 5498396), (8, 2749198), (16, 1374599), (109, 201776), (218, 100888), (436, 50444), (872, 25222), (1744, 12611)]