28131705

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{9923}}^1$

素因数の和:9947

約数の個数: 40

約数和(自身を含む): 57638592

約数和(自身を除く): 29506887

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 315, 405, 567, 945, 2835, 9923, 29769, 49615, 69461, 89307, 148845, 208383, 267921, 347305, 446535, 625149, 803763, 1041915, 1339605, 1875447, 3125745, 4018815, 5626341, 9377235, 28131705]

約数ペア:

[(1, 28131705), (3, 9377235), (5, 5626341), (7, 4018815), (9, 3125745), (15, 1875447), (21, 1339605), (27, 1041915), (35, 803763), (45, 625149), (63, 446535), (81, 347305), (105, 267921), (135, 208383), (189, 148845), (315, 89307), (405, 69461), (567, 49615), (945, 29769), (2835, 9923)]