199432940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{109}}^1\times {\mathrm{1867}}^1$

素因数の和:1999

約数の個数: 72

約数和(自身を含む): 491919120

約数和(自身を除く): 292486180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 109, 140, 196, 218, 245, 436, 490, 545, 763, 980, 1090, 1526, 1867, 2180, 3052, 3734, 3815, 5341, 7468, 7630, 9335, 10682, 13069, 15260, 18670, 21364, 26138, 26705, 37340, 52276, 53410, 65345, 91483, 106820, 130690, 182966, 203503, 261380, 365932, 407006, 457415, 814012, 914830, 1017515, 1424521, 1829660, 2035030, 2849042, 4070060, 5698084, 7122605, 9971647, 14245210, 19943294, 28490420, 39886588, 49858235, 99716470, 199432940]

約数ペア:

[(1, 199432940), (2, 99716470), (4, 49858235), (5, 39886588), (7, 28490420), (10, 19943294), (14, 14245210), (20, 9971647), (28, 7122605), (35, 5698084), (49, 4070060), (70, 2849042), (98, 2035030), (109, 1829660), (140, 1424521), (196, 1017515), (218, 914830), (245, 814012), (436, 457415), (490, 407006), (545, 365932), (763, 261380), (980, 203503), (1090, 182966), (1526, 130690), (1867, 106820), (2180, 91483), (3052, 65345), (3734, 53410), (3815, 52276), (5341, 37340), (7468, 26705), (7630, 26138), (9335, 21364), (10682, 18670), (13069, 15260)]