20784988

素因数分解:

$2^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{7207}}^1$

素因数の和:7321

約数の個数: 24

約数和(自身を含む): 41979392

約数和(自身を除く): 21194404

約数列:

[1, 2, 4, 7, 14, 28, 103, 206, 412, 721, 1442, 2884, 7207, 14414, 28828, 50449, 100898, 201796, 742321, 1484642, 2969284, 5196247, 10392494, 20784988]

約数ペア:

[(1, 20784988), (2, 10392494), (4, 5196247), (7, 2969284), (14, 1484642), (28, 742321), (103, 201796), (206, 100898), (412, 50449), (721, 28828), (1442, 14414), (2884, 7207)]