21898640

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{14407}}^1$

素因数の和:14439

約数の個数: 40

約数和(自身を含む): 53597760

約数和(自身を除く): 31699120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 14407, 28814, 57628, 72035, 115256, 144070, 230512, 273733, 288140, 547466, 576280, 1094932, 1152560, 1368665, 2189864, 2737330, 4379728, 5474660, 10949320, 21898640]

約数ペア:

[(1, 21898640), (2, 10949320), (4, 5474660), (5, 4379728), (8, 2737330), (10, 2189864), (16, 1368665), (19, 1152560), (20, 1094932), (38, 576280), (40, 547466), (76, 288140), (80, 273733), (95, 230512), (152, 144070), (190, 115256), (304, 72035), (380, 57628), (760, 28814), (1520, 14407)]