278298531

素因数分解:

$3^3\times 7^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{239}}^1$

素因数の和:417

約数の個数: 64

約数和(自身を含む): 485683200

約数和(自身を除く): 207384669

約数列:

[1, 3, 7, 9, 21, 27, 61, 63, 101, 183, 189, 239, 303, 427, 549, 707, 717, 909, 1281, 1647, 1673, 2121, 2151, 2727, 3843, 5019, 6161, 6363, 6453, 11529, 14579, 15057, 18483, 19089, 24139, 43127, 43737, 45171, 55449, 72417, 102053, 129381, 131211, 166347, 168973, 217251, 306159, 388143, 393633, 506919, 651753, 918477, 1164429, 1472479, 1520757, 2755431, 4417437, 4562271, 10307353, 13252311, 30922059, 39756933, 92766177, 278298531]

約数ペア:

[(1, 278298531), (3, 92766177), (7, 39756933), (9, 30922059), (21, 13252311), (27, 10307353), (61, 4562271), (63, 4417437), (101, 2755431), (183, 1520757), (189, 1472479), (239, 1164429), (303, 918477), (427, 651753), (549, 506919), (707, 393633), (717, 388143), (909, 306159), (1281, 217251), (1647, 168973), (1673, 166347), (2121, 131211), (2151, 129381), (2727, 102053), (3843, 72417), (5019, 55449), (6161, 45171), (6363, 43737), (6453, 43127), (11529, 24139), (14579, 19089), (15057, 18483)]