840356

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{269}}^1$

素因数の和:355

約数の個数: 24

約数和(自身を含む): 1632960

約数和(自身を除く): 792604

約数列:

[1, 2, 4, 11, 22, 44, 71, 142, 269, 284, 538, 781, 1076, 1562, 2959, 3124, 5918, 11836, 19099, 38198, 76396, 210089, 420178, 840356]

約数ペア:

[(1, 840356), (2, 420178), (4, 210089), (11, 76396), (22, 38198), (44, 19099), (71, 11836), (142, 5918), (269, 3124), (284, 2959), (538, 1562), (781, 1076)]