19884944

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{439}}^1$

素因数の和:615

約数の個数: 40

約数和(自身を含む): 40920000

約数和(自身を除く): 21035056

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 149, 152, 298, 304, 439, 596, 878, 1192, 1756, 2384, 2831, 3512, 5662, 7024, 8341, 11324, 16682, 22648, 33364, 45296, 65411, 66728, 130822, 133456, 261644, 523288, 1046576, 1242809, 2485618, 4971236, 9942472, 19884944]

約数ペア:

[(1, 19884944), (2, 9942472), (4, 4971236), (8, 2485618), (16, 1242809), (19, 1046576), (38, 523288), (76, 261644), (149, 133456), (152, 130822), (298, 66728), (304, 65411), (439, 45296), (596, 33364), (878, 22648), (1192, 16682), (1756, 11324), (2384, 8341), (2831, 7024), (3512, 5662)]