21487638

素因数分解:

$2^1\times 3^1\times {\mathrm{127}}^1\times {\mathrm{163}}^1\times {\mathrm{173}}^1$

素因数の和:468

約数の個数: 32

約数和(自身を含む): 43831296

約数和(自身を除く): 22343658

約数列:

[1, 2, 3, 6, 127, 163, 173, 254, 326, 346, 381, 489, 519, 762, 978, 1038, 20701, 21971, 28199, 41402, 43942, 56398, 62103, 65913, 84597, 124206, 131826, 169194, 3581273, 7162546, 10743819, 21487638]

約数ペア:

[(1, 21487638), (2, 10743819), (3, 7162546), (6, 3581273), (127, 169194), (163, 131826), (173, 124206), (254, 84597), (326, 65913), (346, 62103), (381, 56398), (489, 43942), (519, 41402), (762, 28199), (978, 21971), (1038, 20701)]