21418816

素因数分解:

$2^6\times {\mathrm{43}}^2\times {\mathrm{181}}^1$

素因数の和:279

約数の個数: 42

約数和(自身を含む): 43754802

約数和(自身を除く): 22335986

約数列:

[1, 2, 4, 8, 16, 32, 43, 64, 86, 172, 181, 344, 362, 688, 724, 1376, 1448, 1849, 2752, 2896, 3698, 5792, 7396, 7783, 11584, 14792, 15566, 29584, 31132, 59168, 62264, 118336, 124528, 249056, 334669, 498112, 669338, 1338676, 2677352, 5354704, 10709408, 21418816]

約数ペア:

[(1, 21418816), (2, 10709408), (4, 5354704), (8, 2677352), (16, 1338676), (32, 669338), (43, 498112), (64, 334669), (86, 249056), (172, 124528), (181, 118336), (344, 62264), (362, 59168), (688, 31132), (724, 29584), (1376, 15566), (1448, 14792), (1849, 11584), (2752, 7783), (2896, 7396), (3698, 5792)]