21254874

素因数分解:

$2^1\times 3^1\times {\mathrm{103}}^1\times {\mathrm{163}}^1\times {\mathrm{211}}^1$

素因数の和:482

約数の個数: 32

約数和(自身を含む): 43390464

約数和(自身を除く): 22135590

約数列:

[1, 2, 3, 6, 103, 163, 206, 211, 309, 326, 422, 489, 618, 633, 978, 1266, 16789, 21733, 33578, 34393, 43466, 50367, 65199, 68786, 100734, 103179, 130398, 206358, 3542479, 7084958, 10627437, 21254874]

約数ペア:

[(1, 21254874), (2, 10627437), (3, 7084958), (6, 3542479), (103, 206358), (163, 130398), (206, 103179), (211, 100734), (309, 68786), (326, 65199), (422, 50367), (489, 43466), (618, 34393), (633, 33578), (978, 21733), (1266, 16789)]