21006286

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{503}}^1$

素因数の和:688

約数の個数: 32

約数和(自身を含む): 38223360

約数和(自身を除く): 17217074

約数列:

[1, 2, 7, 14, 19, 38, 133, 157, 266, 314, 503, 1006, 1099, 2198, 2983, 3521, 5966, 7042, 9557, 19114, 20881, 41762, 66899, 78971, 133798, 157942, 552797, 1105594, 1500449, 3000898, 10503143, 21006286]

約数ペア:

[(1, 21006286), (2, 10503143), (7, 3000898), (14, 1500449), (19, 1105594), (38, 552797), (133, 157942), (157, 133798), (266, 78971), (314, 66899), (503, 41762), (1006, 20881), (1099, 19114), (2198, 9557), (2983, 7042), (3521, 5966)]