221405840

素因数分解:

$2^4\times 5^1\times {\mathrm{2767573}}^1$

素因数の和:2767586

約数の個数: 20

約数和(自身を含む): 514768764

約数和(自身を除く): 293362924

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2767573, 5535146, 11070292, 13837865, 22140584, 27675730, 44281168, 55351460, 110702920, 221405840]

約数ペア:

[(1, 221405840), (2, 110702920), (4, 55351460), (5, 44281168), (8, 27675730), (10, 22140584), (16, 13837865), (20, 11070292), (40, 5535146), (80, 2767573)]