19851680

素因数分解:

$2^5\times 5^1\times {\mathrm{53}}^1\times {\mathrm{2341}}^1$

素因数の和:2409

約数の個数: 48

約数和(自身を含む): 47804904

約数和(自身を除く): 27953224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 80, 106, 160, 212, 265, 424, 530, 848, 1060, 1696, 2120, 2341, 4240, 4682, 8480, 9364, 11705, 18728, 23410, 37456, 46820, 74912, 93640, 124073, 187280, 248146, 374560, 496292, 620365, 992584, 1240730, 1985168, 2481460, 3970336, 4962920, 9925840, 19851680]

約数ペア:

[(1, 19851680), (2, 9925840), (4, 4962920), (5, 3970336), (8, 2481460), (10, 1985168), (16, 1240730), (20, 992584), (32, 620365), (40, 496292), (53, 374560), (80, 248146), (106, 187280), (160, 124073), (212, 93640), (265, 74912), (424, 46820), (530, 37456), (848, 23410), (1060, 18728), (1696, 11705), (2120, 9364), (2341, 8480), (4240, 4682)]