21228860

素因数分解:

$2^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{3413}}^1$

素因数の和:3733

約数の個数: 24

約数和(自身を含む): 44737056

約数和(自身を除く): 23508196

約数列:

[1, 2, 4, 5, 10, 20, 311, 622, 1244, 1555, 3110, 3413, 6220, 6826, 13652, 17065, 34130, 68260, 1061443, 2122886, 4245772, 5307215, 10614430, 21228860]

約数ペア:

[(1, 21228860), (2, 10614430), (4, 5307215), (5, 4245772), (10, 2122886), (20, 1061443), (311, 68260), (622, 34130), (1244, 17065), (1555, 13652), (3110, 6826), (3413, 6220)]