1820663999

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{239}}^1$

素因数の和:444

約数の個数: 64

約数和(自身を含む): 2477260800

約数和(自身を除く): 656596801

約数列:

[1, 7, 11, 19, 41, 77, 127, 133, 209, 239, 287, 451, 779, 889, 1397, 1463, 1673, 2413, 2629, 3157, 4541, 5207, 5453, 8569, 9779, 9799, 16891, 18403, 26543, 30353, 31787, 36449, 49951, 57277, 59983, 68593, 98933, 107789, 185801, 186181, 212471, 333883, 349657, 400939, 576707, 692531, 754523, 1088263, 1244473, 1303267, 2047991, 2337181, 4036949, 6343777, 7617841, 8711311, 13689203, 14335937, 23644987, 44406439, 95824421, 165514909, 260094857, 1820663999]

約数ペア:

[(1, 1820663999), (7, 260094857), (11, 165514909), (19, 95824421), (41, 44406439), (77, 23644987), (127, 14335937), (133, 13689203), (209, 8711311), (239, 7617841), (287, 6343777), (451, 4036949), (779, 2337181), (889, 2047991), (1397, 1303267), (1463, 1244473), (1673, 1088263), (2413, 754523), (2629, 692531), (3157, 576707), (4541, 400939), (5207, 349657), (5453, 333883), (8569, 212471), (9779, 186181), (9799, 185801), (16891, 107789), (18403, 98933), (26543, 68593), (30353, 59983), (31787, 57277), (36449, 49951)]