21291956

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{1091}}^1$

素因数の和:1160

約数の個数: 48

約数和(自身を含む): 46230912

約数和(自身を除く): 24938956

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 41, 68, 82, 119, 164, 238, 287, 476, 574, 697, 1091, 1148, 1394, 2182, 2788, 4364, 4879, 7637, 9758, 15274, 18547, 19516, 30548, 37094, 44731, 74188, 89462, 129829, 178924, 259658, 313117, 519316, 626234, 760427, 1252468, 1520854, 3041708, 5322989, 10645978, 21291956]

約数ペア:

[(1, 21291956), (2, 10645978), (4, 5322989), (7, 3041708), (14, 1520854), (17, 1252468), (28, 760427), (34, 626234), (41, 519316), (68, 313117), (82, 259658), (119, 178924), (164, 129829), (238, 89462), (287, 74188), (476, 44731), (574, 37094), (697, 30548), (1091, 19516), (1148, 18547), (1394, 15274), (2182, 9758), (2788, 7637), (4364, 4879)]