21413456

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{70439}}^1$

素因数の和:70466

約数の個数: 20

約数和(自身を含む): 43672800

約数和(自身を除く): 22259344

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 70439, 140878, 281756, 563512, 1127024, 1338341, 2676682, 5353364, 10706728, 21413456]

約数ペア:

[(1, 21413456), (2, 10706728), (4, 5353364), (8, 2676682), (16, 1338341), (19, 1127024), (38, 563512), (76, 281756), (152, 140878), (304, 70439)]