21381460

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{56267}}^1$

素因数の和:56295

約数の個数: 24

約数和(自身を含む): 47265120

約数和(自身を除く): 25883660

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 56267, 112534, 225068, 281335, 562670, 1069073, 1125340, 2138146, 4276292, 5345365, 10690730, 21381460]

約数ペア:

[(1, 21381460), (2, 10690730), (4, 5345365), (5, 4276292), (10, 2138146), (19, 1125340), (20, 1069073), (38, 562670), (76, 281335), (95, 225068), (190, 112534), (380, 56267)]