199974940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{21139}}^1$

素因数の和:21202

約数の個数: 48

約数和(自身を含む): 468800640

約数和(自身を除く): 268825700

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 172, 215, 220, 430, 473, 860, 946, 1892, 2365, 4730, 9460, 21139, 42278, 84556, 105695, 211390, 232529, 422780, 465058, 908977, 930116, 1162645, 1817954, 2325290, 3635908, 4544885, 4650580, 9089770, 9998747, 18179540, 19997494, 39994988, 49993735, 99987470, 199974940]

約数ペア:

[(1, 199974940), (2, 99987470), (4, 49993735), (5, 39994988), (10, 19997494), (11, 18179540), (20, 9998747), (22, 9089770), (43, 4650580), (44, 4544885), (55, 3635908), (86, 2325290), (110, 1817954), (172, 1162645), (215, 930116), (220, 908977), (430, 465058), (473, 422780), (860, 232529), (946, 211390), (1892, 105695), (2365, 84556), (4730, 42278), (9460, 21139)]