20003998

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{479}}^1$

素因数の和:664

約数の個数: 32

約数和(自身を含む): 36403200

約数和(自身を除く): 16399202

約数列:

[1, 2, 7, 14, 19, 38, 133, 157, 266, 314, 479, 958, 1099, 2198, 2983, 3353, 5966, 6706, 9101, 18202, 20881, 41762, 63707, 75203, 127414, 150406, 526421, 1052842, 1428857, 2857714, 10001999, 20003998]

約数ペア:

[(1, 20003998), (2, 10001999), (7, 2857714), (14, 1428857), (19, 1052842), (38, 526421), (133, 150406), (157, 127414), (266, 75203), (314, 63707), (479, 41762), (958, 20881), (1099, 18202), (2198, 9101), (2983, 6706), (3353, 5966)]