17221988

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{19841}}^1$

素因数の和:19883

約数の個数: 24

約数和(自身を含む): 35556864

約数和(自身を除く): 18334876

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 868, 19841, 39682, 79364, 138887, 277774, 555548, 615071, 1230142, 2460284, 4305497, 8610994, 17221988]

約数ペア:

[(1, 17221988), (2, 8610994), (4, 4305497), (7, 2460284), (14, 1230142), (28, 615071), (31, 555548), (62, 277774), (124, 138887), (217, 79364), (434, 39682), (868, 19841)]