19740735

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{2161}}^1$

素因数の和:2208

約数の個数: 48

約数和(自身を含む): 40472640

約数和(自身を除く): 20731905

約数列:

[1, 3, 5, 7, 9, 15, 21, 29, 35, 45, 63, 87, 105, 145, 203, 261, 315, 435, 609, 1015, 1305, 1827, 2161, 3045, 6483, 9135, 10805, 15127, 19449, 32415, 45381, 62669, 75635, 97245, 136143, 188007, 226905, 313345, 438683, 564021, 680715, 940035, 1316049, 2193415, 2820105, 3948147, 6580245, 19740735]

約数ペア:

[(1, 19740735), (3, 6580245), (5, 3948147), (7, 2820105), (9, 2193415), (15, 1316049), (21, 940035), (29, 680715), (35, 564021), (45, 438683), (63, 313345), (87, 226905), (105, 188007), (145, 136143), (203, 97245), (261, 75635), (315, 62669), (435, 45381), (609, 32415), (1015, 19449), (1305, 15127), (1827, 10805), (2161, 9135), (3045, 6483)]