21140084

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{503}}^1$

素因数の和:612

約数の個数: 48

約数和(自身を含む): 45158400

約数和(自身を除く): 24018316

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 79, 133, 158, 266, 316, 503, 532, 553, 1006, 1106, 1501, 2012, 2212, 3002, 3521, 6004, 7042, 9557, 10507, 14084, 19114, 21014, 38228, 39737, 42028, 66899, 79474, 133798, 158948, 267596, 278159, 556318, 755003, 1112636, 1510006, 3020012, 5285021, 10570042, 21140084]

約数ペア:

[(1, 21140084), (2, 10570042), (4, 5285021), (7, 3020012), (14, 1510006), (19, 1112636), (28, 755003), (38, 556318), (76, 278159), (79, 267596), (133, 158948), (158, 133798), (266, 79474), (316, 66899), (503, 42028), (532, 39737), (553, 38228), (1006, 21014), (1106, 19114), (1501, 14084), (2012, 10507), (2212, 9557), (3002, 7042), (3521, 6004)]