19891556

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{227}}^1\times {\mathrm{1153}}^1$

素因数の和:1403

約数の個数: 24

約数和(自身を含む): 36835680

約数和(自身を除く): 16944124

約数列:

[1, 2, 4, 19, 38, 76, 227, 454, 908, 1153, 2306, 4313, 4612, 8626, 17252, 21907, 43814, 87628, 261731, 523462, 1046924, 4972889, 9945778, 19891556]

約数ペア:

[(1, 19891556), (2, 9945778), (4, 4972889), (19, 1046924), (38, 523462), (76, 261731), (227, 87628), (454, 43814), (908, 21907), (1153, 17252), (2306, 8626), (4313, 4612)]