19981724

素因数分解:

$2^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{5209}}^1$

素因数の和:5357

約数の個数: 24

約数和(自身を含む): 40262880

約数和(自身を除く): 20281156

約数列:

[1, 2, 4, 7, 14, 28, 137, 274, 548, 959, 1918, 3836, 5209, 10418, 20836, 36463, 72926, 145852, 713633, 1427266, 2854532, 4995431, 9990862, 19981724]

約数ペア:

[(1, 19981724), (2, 9990862), (4, 4995431), (7, 2854532), (14, 1427266), (28, 713633), (137, 145852), (274, 72926), (548, 36463), (959, 20836), (1918, 10418), (3836, 5209)]