20921270

素因数分解:

$2^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{15271}}^1$

素因数の和:15415

約数の個数: 16

約数和(自身を含む): 37935648

約数和(自身を除く): 17014378

約数列:

[1, 2, 5, 10, 137, 274, 685, 1370, 15271, 30542, 76355, 152710, 2092127, 4184254, 10460635, 20921270]

約数ペア:

[(1, 20921270), (2, 10460635), (5, 4184254), (10, 2092127), (137, 152710), (274, 76355), (685, 30542), (1370, 15271)]