20749492029

素因数分解:

$3^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{347}}^1\times {\mathrm{3203}}^1$

素因数の和:3694

約数の個数: 48

約数和(自身を含む): 32539926528

約数和(自身を除く): 11790434499

約数列:

[1, 3, 7, 21, 49, 127, 147, 347, 381, 889, 1041, 2429, 2667, 3203, 6223, 7287, 9609, 17003, 18669, 22421, 44069, 51009, 67263, 132207, 156947, 308483, 406781, 470841, 925449, 1111441, 1220343, 2159381, 2847467, 3334323, 6478143, 7780087, 8542401, 19932269, 23340261, 54460609, 59796807, 141153007, 163381827, 423459021, 988071049, 2964213147, 6916497343, 20749492029]

約数ペア:

[(1, 20749492029), (3, 6916497343), (7, 2964213147), (21, 988071049), (49, 423459021), (127, 163381827), (147, 141153007), (347, 59796807), (381, 54460609), (889, 23340261), (1041, 19932269), (2429, 8542401), (2667, 7780087), (3203, 6478143), (6223, 3334323), (7287, 2847467), (9609, 2159381), (17003, 1220343), (18669, 1111441), (22421, 925449), (44069, 470841), (51009, 406781), (67263, 308483), (132207, 156947)]